Monoprice USB 3.0 7-port Switch Hub with AC Adapter
Product # 21787
UPC # 889028050835
$24.99
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Browse 52 questions
and 119 answers
Do the 7 port units come with LED power indicators for the individual switches?
Robert H
on Aug 10, 2017
BEST ANSWER: Yes they do!! Note: I use mine plugged in to ac power too, not just phantom from the computer. The LED is for each switch, and you press the button to power on and off. The LED doesn't automatically light up when you plug something in, you have to press the button for that port. I hope I was clear.
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- Dewey D on Aug 10, 2017
- Purchased on May 12, 2017
BEST ANSWER: Yes they do!! Note: I use mine plugged in to ac power too, not just phantom from the computer. The LED is for each switch, and you press the button to power on and off. The LED doesn't automatically light up when you plug something in, you have to press the button for that port. I hope I was clear.
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- Dewey D on Aug 10, 2017
- Purchased on May 12, 2017
Yes, when individual switches are turned on there is a blue led indicator light where the numbers are approximately the color blue of the blue showing in the USB ports in the picture
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- ET on Aug 10, 2017
- Purchased on Apr 28, 2017
Yes. You can turn individual ports on and off
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- Kenneth I on Apr 24, 2020
- Purchased on Mar 22, 2020
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Is the casing made of metal or plastic?
New User U
on Nov 2, 2019
BEST ANSWER: It is plastic, but of good quality. In use for months now, no issues. The ability to switch each port on or off individually is great. Indicator lights are a huge plus as well.
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- Steve C on Nov 2, 2019
- Purchased on Dec 24, 2018
BEST ANSWER: It is plastic, but of good quality. In use for months now, no issues. The ability to switch each port on or off individually is great. Indicator lights are a huge plus as well.
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- Steve C on Nov 2, 2019
- Purchased on Dec 24, 2018
The case appears to be made of plastic.
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- Gerald W on Nov 3, 2019
- Purchased on Nov 10, 2018
Mine is plastic but it feels fine.
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- Funpilot on Nov 3, 2019
- Purchased on Jan 25, 2019
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This says "Switch" in the title. Can this be used to share usb peripherals between 2 computers (taking up 2 of the ports?). Seems this is just a HUB where you can turn individual ports on and off
A shopper
on Jan 25, 2020
BEST ANSWER: I believe the switch part refers to the fact that you can turn off the ports. It is not for sharing between computers. I think it is great because it can be fore charging even if computer turned off.
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- Richard B on Jan 26, 2020
- Purchased on Aug 4, 2019
BEST ANSWER: I believe the switch part refers to the fact that you can turn off the ports. It is not for sharing between computers. I think it is great because it can be fore charging even if computer turned off.
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- Richard B on Jan 26, 2020
- Purchased on Aug 4, 2019
This can only be used on one computer at a time. You cannot share this between two computers. By switch I think they mean that you can turn each individual port off or on.
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- ART W on Jan 26, 2020
- Purchased on Feb 17, 2019
It’s a simple Hub with push button switches to enable and disable ports.
It does not have the ability to share ports between 2 computers.
It does not have the ability to share ports between 2 computers.
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- Read S on Jan 25, 2020
- Purchased on May 27, 2019
On mine there is one dedicated input cable so it is designed to work with one device.
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- Funpilot on Jan 25, 2020
- Purchased on Jan 25, 2019
Can't answer. Only use it to add USB for 1 pc
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- Larry M on Jan 25, 2020
- Purchased on May 12, 2019
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Will this Monoprice USB 3.0 7-port Switch Hub, with AC Adapter #21787 recognize my iPhone if i plug it in to sync or update music with iTunes on my Windows 10 laptop?
Rick K
on Apr 24, 2020
BEST ANSWER: The short answer is YES.... I don't normally plug my iPhone in to it but have tried it just now. The computer and phone acknowledged the connection. My iPad turned on when plugged in which is normal, but doesn't like to charge using it.
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- John on Apr 24, 2020
- Purchased on Jun 1, 2019
BEST ANSWER: The short answer is YES.... I don't normally plug my iPhone in to it but have tried it just now. The computer and phone acknowledged the connection. My iPad turned on when plugged in which is normal, but doesn't like to charge using it.
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- John on Apr 24, 2020
- Purchased on Jun 1, 2019
Yes it will. As long as it is connected to the computer plugging in to this with a sinc cord would be the same as if the cord was plugged straight into the computer. Just make sure that the port on the hub is turned on.
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- Richard B on Apr 24, 2020
- Purchased on Aug 4, 2019
The computer where I am using this hub does not have itunes but when I connected my iphone it showed up just like it does for any of the built in USB ports. Mine is a Win10 laptop so you should be in good shape.
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- Kenneth I on Apr 24, 2020
- Purchased on Mar 22, 2020
All of my devices function as if they were plugged directly into my computer.
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- K E on Apr 24, 2020
- Purchased on Feb 26, 2020
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How long is the USB cable attached to the hub? I'm wondering if I'm going to need a USB extension with my PC under the desk.
Justin S
on Apr 30, 2020
BEST ANSWER: It has been my experience that a 1.5 meter cable is not a problem. You may be able to get away with the longer cables, I have issues with the 5 meter cables. On the other hand, I have used two of the 49 ft extender cables in series that Monoprice sells and that worked great to access an instrument in an environmental chamber from my desk..
Hope this helps.
Hope this helps.
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- LANCE D. on Apr 30, 2020
BEST ANSWER: It has been my experience that a 1.5 meter cable is not a problem. You may be able to get away with the longer cables, I have issues with the 5 meter cables. On the other hand, I have used two of the 49 ft extender cables in series that Monoprice sells and that worked great to access an instrument in an environmental chamber from my desk..
Hope this helps.
Hope this helps.
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- LANCE D. on Apr 30, 2020
I can only say it sits on top of my desk et it's long enough to connect to my computer which also sits under my desk.
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- Larry W on May 3, 2020
The length is about 30 inches. You should be fine reaching your Pc under the desk I think
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- L U on May 6, 2020
It's around 3'. I had to use an extension with my setup, works fine.
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- Chris P on Apr 30, 2020
- Purchased on Apr 5, 2020
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Work without being plugged into a computer?
James H
on Aug 28, 2017
BEST ANSWER: Hi, hubs that comply with USB 3.0 (or 2.0) standards are not ideal for stand-alone charging without being connected to a computer. This is because USB standards have requirements for how power is handled so that ports only have minimal power until a device is detected. Without a computer connection, some devices will not charge at all, some devices may show slow charging only, and others may show charging status.
For a stand alone multi-charger, instead of this USB 3.0 data hub, products 13914 and 13915 would be better solutions. Thanks for checking.
For a stand alone multi-charger, instead of this USB 3.0 data hub, products 13914 and 13915 would be better solutions. Thanks for checking.
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- Irv S Staff on Sep 19, 2017
BEST ANSWER: Hi, hubs that comply with USB 3.0 (or 2.0) standards are not ideal for stand-alone charging without being connected to a computer. This is because USB standards have requirements for how power is handled so that ports only have minimal power until a device is detected. Without a computer connection, some devices will not charge at all, some devices may show slow charging only, and others may show charging status.
For a stand alone multi-charger, instead of this USB 3.0 data hub, products 13914 and 13915 would be better solutions. Thanks for checking.
For a stand alone multi-charger, instead of this USB 3.0 data hub, products 13914 and 13915 would be better solutions. Thanks for checking.
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- Irv S Staff on Sep 19, 2017
Worked right off the bat! I like that the hub has switches for each port.
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- Dale on Aug 29, 2017
- Purchased on Aug 13, 2017
Yes, but not if you need to plug in things like external HDD's
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- New User U on Jul 25, 2018
- Purchased on Jul 11, 2018
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How long is the AC adapter cable?
A shopper
on Dec 22, 2017
BEST ANSWER: It's actually longer than I though it would be. Probably about 3 ft long.
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- New User U on Jul 25, 2018
- Purchased on Jul 11, 2018
BEST ANSWER: It's actually longer than I though it would be. Probably about 3 ft long.
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- New User U on Jul 25, 2018
- Purchased on Jul 11, 2018
The cable is about 36 inches long
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- Curtis F on Dec 23, 2017
- Purchased on Jul 3, 2017
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Does this device send power through the USB port back into the computer?
I have USB fans connected to my desktop tower, that keeps it cool inside the nook that it's sitting inside. (I don't want the computer to overheat.) On some motherboards, the USB ports have separate power lines, while others, like my new Asus motherboard, seems to share them. What's happening is that with my USB 2.0 powered hub connected, my fans keep spinning, even with my PC power off. If I unplug the USB hub, they shut off as expected.
Will this hub send power back through the USB port back to the connected PC like my old USB 2.0 hub does?
I have USB fans connected to my desktop tower, that keeps it cool inside the nook that it's sitting inside. (I don't want the computer to overheat.) On some motherboards, the USB ports have separate power lines, while others, like my new Asus motherboard, seems to share them. What's happening is that with my USB 2.0 powered hub connected, my fans keep spinning, even with my PC power off. If I unplug the USB hub, they shut off as expected.
Will this hub send power back through the USB port back to the connected PC like my old USB 2.0 hub does?
Jason G
on Dec 11, 2019
Monoprice USB 3.0 7-port Switch Hub with AC Adapter
Heavy Duty 7-Port USB 3.0 Hub with 3 Charging Ports, With AC Adapter
Monoprice USB 3.0 10-port Switch Hub, with AC Adapter
Heavy Duty 13-Port USB 3.0 Hub, With AC Adapter
BEST ANSWER: No, with my Mac MacBook Pro, there is no way for the hub to send power back. Without being any kind of expert, I suspect that the action of the hub draws energy from the computer. All my peripherals heat up much more than I’d like.
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- Jonathan L on Jun 14, 2021
BEST ANSWER: No, with my Mac MacBook Pro, there is no way for the hub to send power back. Without being any kind of expert, I suspect that the action of the hub draws energy from the computer. All my peripherals heat up much more than I’d like.
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- Jonathan L on Jun 14, 2021
I don't have any fans spinning in my laptop while this hub is powered and connected to a USB 2.0 port on the laptop.
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- New User U on Jun 14, 2021
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Recently purchased 7 port hub for imac desktop. Tried to connect laptop to print to usb connected printer and laptop can't see usb printer, why?
A shopper
on Mar 13, 2020
BEST ANSWER: It might seem obvious but I miss it from time to time. Sometimes the on/off button for that port is inadvertently turned off as I use the hub with other cables for other items. Make sure the light is on. I have had mine for only 8 months and need to return mine for a warranty replacement. It just stopped working. So...this not may not be helpful. I like many Monoprice products, they are good designers, I just think there can be mfrg issues with keeping prices reasonable, and the QC in the faraway places where they are made is overlooked. ~TEU
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- Tom U on Mar 16, 2020
- Purchased on Aug 28, 2019
BEST ANSWER: It might seem obvious but I miss it from time to time. Sometimes the on/off button for that port is inadvertently turned off as I use the hub with other cables for other items. Make sure the light is on. I have had mine for only 8 months and need to return mine for a warranty replacement. It just stopped working. So...this not may not be helpful. I like many Monoprice products, they are good designers, I just think there can be mfrg issues with keeping prices reasonable, and the QC in the faraway places where they are made is overlooked. ~TEU
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- Tom U on Mar 16, 2020
- Purchased on Aug 28, 2019
The buttons turn off individual ports. Make sure the light is lit on the port that the printer is plugged in to.
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- Kevin S on Mar 13, 2020
- Purchased on May 14, 2019
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what are the specifications for the external power supply for both the 7 and 10 port units?
A shopper
on May 8, 2017
BEST ANSWER: They have 5V 3A external power adapters for use with USB devices that need more power than typical USB peripherals.
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- Irv S Staff on May 10, 2017
BEST ANSWER: They have 5V 3A external power adapters for use with USB devices that need more power than typical USB peripherals.
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- Irv S Staff on May 10, 2017
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I just received this unit and it appears the USB has to be plugged into the computer for charging to occur. Is this true?
If so, do you have a product that does not require to be plugged into a computer to continue charging devices?
If so, do you have a product that does not require to be plugged into a computer to continue charging devices?
James H
on Aug 28, 2017
BEST ANSWER: Hi, that is correct, based on USB 3.0 standards, USB hubs would usually have to be plugged to a computer to enable more current to charge mobile devices, otherwise the ports might only provide minimum power that won't be sufficient for charging. Using the hub in the way you described as a stand-alone charger is not ideal and could get mixed results depending on the mobile device. Some mobile devices might not charge at all, some devices could indicate slow charging only, and still some devices might simply show the device is charging (we got these results when we tested this setup with different devices).
For a stand-alone multi-device charger, the following products would be great solutions: 13915, 13914. Thanks for checking.
For a stand-alone multi-device charger, the following products would be great solutions: 13915, 13914. Thanks for checking.
- Reply
- Inaccurate
- Irv S Staff on Sep 19, 2017
BEST ANSWER: Hi, that is correct, based on USB 3.0 standards, USB hubs would usually have to be plugged to a computer to enable more current to charge mobile devices, otherwise the ports might only provide minimum power that won't be sufficient for charging. Using the hub in the way you described as a stand-alone charger is not ideal and could get mixed results depending on the mobile device. Some mobile devices might not charge at all, some devices could indicate slow charging only, and still some devices might simply show the device is charging (we got these results when we tested this setup with different devices).
For a stand-alone multi-device charger, the following products would be great solutions: 13915, 13914. Thanks for checking.
For a stand-alone multi-device charger, the following products would be great solutions: 13915, 13914. Thanks for checking.
- Reply
- Inaccurate
- Irv S Staff on Sep 19, 2017
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How many watts is the power supply?
A shopper
on Mar 27, 2018
BEST ANSWER: 15 watts. 5-volt - 3-amp (P = I * E, right?)
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- Garry W on Nov 3, 2018
- Purchased on Oct 23, 2018
BEST ANSWER: 15 watts. 5-volt - 3-amp (P = I * E, right?)
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- Garry W on Nov 3, 2018
- Purchased on Oct 23, 2018
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Can it handle powering western digital passport drives?
Frank F
on Oct 24, 2018
BEST ANSWER: Thank you for your question.
This can work with Portable drives like the WD Passport Drives.
This can work with Portable drives like the WD Passport Drives.
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- Tyler C Staff on Aug 7, 2019
BEST ANSWER: Thank you for your question.
This can work with Portable drives like the WD Passport Drives.
This can work with Portable drives like the WD Passport Drives.
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- Tyler C Staff on Aug 7, 2019
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Do you have to use the power supply or can you simply use the power from the computer?
Kathy F
on Nov 16, 2018
BEST ANSWER: Hi, power from the computer works for low power peripherals. Using the power supply ensures there is enough power for multiple devices so it is still highly recommended especially for high speed data applications.
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- Irv S Staff on Nov 19, 2018
BEST ANSWER: Hi, power from the computer works for low power peripherals. Using the power supply ensures there is enough power for multiple devices so it is still highly recommended especially for high speed data applications.
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- Irv S Staff on Nov 19, 2018
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Do the buttons have to be pressed each time the computer is powered up in order to select each USB device that you want to connect? I'm looking for a USB hub that will be inaccessible, that will have anything that is plugged into it enabled each time the computer is turned on.
Richard S
on Jan 30, 2019
BEST ANSWER: I have the 10-port switch, but it looks like they operate in the same way. They are physical switches that do not reset, so any port that is turned on will stay on, regardless of the status of any devices connected.
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- Ryan G on Feb 11, 2021
BEST ANSWER: I have the 10-port switch, but it looks like they operate in the same way. They are physical switches that do not reset, so any port that is turned on will stay on, regardless of the status of any devices connected.
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- Ryan G on Feb 11, 2021
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How long is the actual adapter(not the cable)?
A shopper
on Feb 22, 2019
BEST ANSWER: Hi, the USB hub itself is 6.9" long. The second picture should have measurements labelled and should be able to provide more detail. Thanks for checking.
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- Irv S Staff on Feb 22, 2019
BEST ANSWER: Hi, the USB hub itself is 6.9" long. The second picture should have measurements labelled and should be able to provide more detail. Thanks for checking.
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- Irv S Staff on Feb 22, 2019
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What chipset does the 4 port use (model 24262), the 7 port (model 21787), and the 10 port (model 21788)?
A shopper
on Dec 10, 2018
Monoprice USB 3.0 7-port Switch Hub with AC Adapter
Monoprice 4-port USB 3.0 Switch Hub with Power Adapter
Monoprice USB 3.0 10-port Switch Hub, with AC Adapter
What chipset does the 4 port use (model 24262), the 7 port (model 21787), and the 10 port (model 21788)?
Robert M
on Dec 10, 2018
Monoprice USB 3.0 7-port Switch Hub with AC Adapter
Monoprice 4-port USB 3.0 Switch Hub with Power Adapter
Monoprice USB 3.0 10-port Switch Hub, with AC Adapter
Can this also be used to power iPhones/ipads?
douglas m
on May 14, 2020
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Rated 2 out of 5
Not Happy
I've been using this hub for a couple of months now and I am mostly satisfied with it. However, I am mightily disappointed that one of the switches has already died.
I do not turn the switches on and off very often at all. I typically plug a device in, turn the port on via the switch, and get on with my day. The port stays on from that point until I remove the device from the hub. In this case, the device remained plugged in, but the port ceased to function. I tried turning the port ob via the switch, but the switch would not stay in the on position.
I hadn't used the switch on that port more than a handful of times, so its demise is quite disheartening and more than a bit frustrating. I was going to get a couple more of these, but that will not be happening now.
I do not turn the switches on and off very often at all. I typically plug a device in, turn the port on via the switch, and get on with my day. The port stays on from that point until I remove the device from the hub. In this case, the device remained plugged in, but the port ceased to function. I tried turning the port ob via the switch, but the switch would not stay in the on position.
I hadn't used the switch on that port more than a handful of times, so its demise is quite disheartening and more than a bit frustrating. I was going to get a couple more of these, but that will not be happening now.
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Rated 3 out of 5
Worked great for a while
This worked for about a 6 months before one of the usb ports stopped working, so I just used the other 6.
Then another one went.
I think at this point I'm down to 4 usable ports. It's a nice device but would be nicer if all the ports still worked. I have mine mounted in a stable position on my desk, so I'm not mistreating the device or by any means pushing its limits.
Then another one went.
I think at this point I'm down to 4 usable ports. It's a nice device but would be nicer if all the ports still worked. I have mine mounted in a stable position on my desk, so I'm not mistreating the device or by any means pushing its limits.
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Rated 3 out of 5
OK - But Documentation is TERRIBLE
The first one of these I received did not work. That's fine, I understand these things happen, and Monoprice was great about swapping it for a working unit. The springy buttons are a little cheap and uneven - but what do you want for the price?
But really, the "documentation" (small card) that comes with the device is just AWFUL; A large portion of all the paragraphs in the instructions are cut off vertically - so it's all but useless. Luckily, it's fairly easy to figure out - but this is pretty bad Quality Assurance.
But really, the "documentation" (small card) that comes with the device is just AWFUL; A large portion of all the paragraphs in the instructions are cut off vertically - so it's all but useless. Luckily, it's fairly easy to figure out - but this is pretty bad Quality Assurance.
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March 10, 2021
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Rated 5 out of 5
Great USB Hub
Works great. Just as described.
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Rated 1 out of 5
Not for use with hard drives
The device drops connections all the time. I would not use this with any external hard drive. I did not drop usb flash drive connections as long as you had power to the device.
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Rated 5 out of 5
Like a Charm
Had this for two weeks and working as advertised. Adds a ton of flexibility and capacity for adding external devices . Love the reset buttons so you don't have to handle cables.
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Rated 1 out of 5
Doesn't do the job
Needed a device to manage multiple USB 3.0 devices and this product did not do it on either my Win10 or MacOS computers. I'll keep looking.
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Rated 5 out of 5
Perfect. Just what I was looking for at a great price
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Rated 1 out of 5
On my second one (warranty return)
Note: I have a lot of MP products.
This one just plain doesn't work. Multiple systems tried, multiple ports on each system. Doesn't charge anything, doesn't connect consistently, shutting off a port and turning it back on pretty much guarantees poor re-connection, and data transfer is just plain abysmal. Never try to use this for data. It drops connections again and again.
After the first one failed, I tried another (RMA from monoprice, so that was nice I guess). Same issues. Total junk.
Not worth the money. Don't bother at all.
This one just plain doesn't work. Multiple systems tried, multiple ports on each system. Doesn't charge anything, doesn't connect consistently, shutting off a port and turning it back on pretty much guarantees poor re-connection, and data transfer is just plain abysmal. Never try to use this for data. It drops connections again and again.
After the first one failed, I tried another (RMA from monoprice, so that was nice I guess). Same issues. Total junk.
Not worth the money. Don't bother at all.
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Rated 1 out of 5
Less than thrilled
I have a new mini Mac and the I/O ports have been "upgraded" to USB-C as the main I/O. There are two of the older USB 3 ports. The problem is I have more than two accessories that need the older USB 3 ports; keyboard, mouse, CD drive, backup drive, scanner, and photo accessories. This 7-port hub (model 21787) was going to solve the dilemma I had with the previous 7-port hub (model 14909) - wrong! The original hub I purchased was plugged into a USB-C port and when plugged into the hub, the keyboard, the mouse, the CD drive, and the scanner didn't work. A pop-up screen identified what the device was that was plugged in, but stated it didn't have any power, including the scanner that was plugged into the wall and power was on. However, devices that had integral memory did work; the backup drive and flash drives. The new 7-port hub (model 21787) plugs into one of the older USB 3 ports and was supposed to cure the problem I had with the previous hub (model 14909) because all connections were with the old erUSB 3. Wrong again, it was just like the previous hub. If the device has integral memory, it works, if it doesn't have integral memory, it just gets the error message about no power. I replaced the keyboard and mouse with wireless devices and they are working fine. It looks like I'll have to fire up the old Mac to use the CD drive, scanner and photo accessories. Not what I expected.
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