In my home entertainment center I have multiple components which require internet access for firmware upgrades or content. As I have only one Ethernet port available, I was constantly swapping Ethernet cables. With this switch in place now I have only to turn the dial to select the component currently in use and it's on line. It's a sturdy mechanical device. just like the products we used to buy.
For an Internet connection to my desktop, notebook computer and Smart TV, I prefer the reliability of an ethernet cable, instead of WiFi. Good wireless routers are expensive and, because of their complexity compared to this simple 4-way switch, they can introduce their own problems to the system. This unit has a rugged metal casing and rubberized pads on the bottom to prevent slipping or scratching of surfaces. The switching mechanism is substantial and seems like it will provide years of dependable service. The design is "retro" in a GOOD way it actually reminds me of electronic devices made in the 1960s, when things were built to last.
Since this is a basic A-B-C-D switch, it will enable you to connect your modem to a total of 4 devices through RJ45 ethernet cables. However, be advised that it is not intended to function as a router, and it will provide a network connection to only ONE device at a time. This suits my needs perfectly, and with the switch placed within easy reach on my computer desk, I can easily choose which device I want to connect with a simple turn of the rotary switch. This unit WILL handle high-speed ethernet connections flawlessly. I have been able to stream full 1080p movies from Netflix and Amazon without any video feed interruptions whatsoever, and my computer access to the Internet is as fast as always. In short, this switch does its job superbly without adding any problems to the network, which is exactly how it should perform.
I use this for switching Cisco console connections - one PC is hooked up to this switch with a Cisco console cable, and each port on this switch is hooked up to a Cisco device with a regular Cat5 cable. Works great!