USB to Serial Converter Cable (DB-9M / USB-A Male) 3ft
Product # 3726
UPC # 844660037262
$17.29
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Questions and Answers
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My PC has only one HDMI display port and no vga or other ports. I need this USB - VGA cable I want to connect a pc USB port to monitor as a second port because I work with to monitors. Does this cable work for me? Thanks
A shopper
on Jan 14, 2018
BEST ANSWER: No, this cable has nothing to do with monitors. This cable converts a USB port on your computer to a serial port for legacy devices that require a 9-pin serial port. You are probably looking for a USB to VGA adapter.
- Reply
- Inaccurate
- Aaron C on Jan 15, 2018
- Purchased on Mar 8, 2017
BEST ANSWER: No, this cable has nothing to do with monitors. This cable converts a USB port on your computer to a serial port for legacy devices that require a 9-pin serial port. You are probably looking for a USB to VGA adapter.
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- Inaccurate
- Aaron C on Jan 15, 2018
- Purchased on Mar 8, 2017
this cable is for connecting serial device via USB not video. You can use this to connect to routers and switches is you do not have a serial interface on your computer. USB doesn't transfer Video
- Reply
- Inaccurate
- Justin W on Jan 15, 2018
- Purchased on Jan 20, 2017
You need a cable with a DE-15 port and an USB. Monitor connector is a port with three rows with female holes. Found the product by typing in Google.
- Reply
- Inaccurate
- Myra M on Oct 11, 2018
- Purchased on Sep 26, 2018
No, this cable is for serial connection to use laptop for console connection into Cisco gear. Not intended for video
- Reply
- Inaccurate
- Miles L on Jan 16, 2018
- Purchased on Mar 1, 2017
This cable would not work for that purpose. You would need a USB to VGA adapter for what you describe.

Monoprice USB 2.0 to VGA Adapter

Monoprice USB 3.0 to VGA Adapter
- Reply
- Inaccurate
- Timothy J on Jan 14, 2018
- Purchased on Feb 24, 2017
You need a hdmi to vga converter
- Reply
- Inaccurate
- EDUARDO C on Jan 14, 2018
- Purchased on Feb 5, 2017
Vote for the best answer above!
RS422 as well?
A shopper
on Jul 6, 2021
BEST ANSWER: No. RS232 to RS422/485 Serial Port Converter w/ 15KV ESD Protection - RS232 to RS 422 RS485 Converter Adapter (IC232485S) DTECH RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge. This was on Amazon, not at Monoprice. I hope this helps.
- Reply
- Inaccurate
- Mark S on Jul 6, 2021
- Purchased on Nov 27, 2020
BEST ANSWER: No. RS232 to RS422/485 Serial Port Converter w/ 15KV ESD Protection - RS232 to RS 422 RS485 Converter Adapter (IC232485S) DTECH RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge. This was on Amazon, not at Monoprice. I hope this helps.
- Reply
- Inaccurate
- Mark S on Jul 6, 2021
- Purchased on Nov 27, 2020
price good works well no problems will buy again later when needed
- Reply
- Inaccurate
- Jim C on Jul 6, 2021
- Purchased on Sep 14, 2020
Vote for the best answer above!
Reviews
4.3 / 5.0
162 Reviews
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Rated 4 out of 5
Probably good for some devices, not mine
Once you get the driver installed, windows sees it as COM3.
I have yet to succeed in connecting to my managed Gigabit switch with it though. Had to purchase a straight-thru gender changer (F-F) and a null modem cable. Still no success in communicating with the switch from Windows 10 using Putty. Driver comes on CD-ROM. Since my laptop does not have a CD-ROM, I had to search the web for the driver and download it.
I have yet to succeed in connecting to my managed Gigabit switch with it though. Had to purchase a straight-thru gender changer (F-F) and a null modem cable. Still no success in communicating with the switch from Windows 10 using Putty. Driver comes on CD-ROM. Since my laptop does not have a CD-ROM, I had to search the web for the driver and download it.
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Rated 4 out of 5
Works well, but bought wrong item
This product works, but I ordered the wrong port. I needed DE-15. Oh well, I will find a use for it.
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Rated 5 out of 5
Good seller, item arrived in a timely manner as discribed .
I will purchase from this seller again.
Do not send me any more notices or ads.
I will purchase from this seller again.
Do not send me any more notices or ads.
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Rated 5 out of 5
works as advertised.
Write your review here. It must be at least 50 characters long. ConMust have for anyone withsider whether you would recommend this product and what you like or dislike about it.
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Rated 5 out of 5
Works for me
I use this for programming Crestron products. Works nominally.
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Rated 5 out of 5
It Works.
Using this to configure Cisco Routers and Switches from the console port. Works like a charm.
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Rated 4 out of 5
usb to serial cable
Use this with Cisco console cable to interface with Switches. have no issues.
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Rated 5 out of 5
USB t- Serial Converter
Use it to connect PC to Cisco switch. Works great. Use minicom to setup switch, then ssh to remotely connect.
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Rated 5 out of 5
Works under Linux
It works under OpenSuse 42.2 Linux with no issues and no add-on drivers.
Good quality cable and connectors should last for years.
Good quality cable and connectors should last for years.
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Rated 4 out of 5
Worked out of the box with Win10
I bought this cable, plugged it into my Lenovo Win10 laptop and it worked right out of the box.
The USB kept connecting and disconnecting in the first USB port that I tried so i moved the cable to a second port and it works fine. I'm not sure if I blame the port being a little worn or if it has to do with the USB version of that port. Great addition to my PC for the price.
The USB kept connecting and disconnecting in the first USB port that I tried so i moved the cable to a second port and it works fine. I'm not sure if I blame the port being a little worn or if it has to do with the USB version of that port. Great addition to my PC for the price.
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