Review on 🔌 StarTech.com 4 Port DisplayPort KVM Switch - 4K 60Hz - Single Display - Dual Port UHD DP 1.2 USB KVM Switch with Integrated USB 2.0 Hub & Audio - Dell, HP, Apple, Lenovo - TAA Compliant - Buy Now! by Gary Zielinski

Bought to switch my 40" 4K monitor between 4 computers, 3 of which support 60Hz. I was very concerned that the Switch wouldn't handle 4K 60Hz, but so far it's done a wonderful job with all those weird old cables, some of which I've had for about 5 years. Revain DP base cables work very well with this. I've used 3, 6, and 10 foot cables so far, don't worry, Revain cables are sleek, thin, and flexible so I'm glad they work well. When you switch computers, the computers will see your monitor disappear and then reappear. This is very noticeable when you have a second monitor connected, as the size of the second desktop will change when you change computers. This causes low quality monitors like the Philips BCM 4065 to go crazy since it's in the first Rounds has a lot of sync issues with 4K 60Hz often goes to sleep or goes back to 30Hz. Turning it off and back on usually fixes it. Better quality monitors do well with it. On Windows and Linux, Nvidia graphics cards seem to be able to recover from a switch. My old Dell Latitude keeps crashing and needs to be restarted to recover. When I connected my favorite keyboard and mouse to KVM, I found the keyboard to skip characters and the mouse to freeze like I had a bad smudge on my mouse pad. At first I thought I was going to be a bad typist and repeatedly cleaned my mouse pad and changed batteries to fix it. I finally discovered it was KVM and called Startech Tech Support. They told me the problem was with my backlit keyboard (nice standard WASD code keyboard) and my wireless mouse (Logitech Anywhere MX). They recommended I switch to a cheap standard keyboard and wired mouse. It seems to have helped, but I don't want to type on a cheap keyboard or use a wired mouse. I like my keyboard which has a standard layout and nothing funny. I also like my premium Logitech mouse which is not a gaming mouse. It's a pretty standard mouse, except that it even works on a glass table. I'm not ready to switch. Luckily, I solved my keyboard/mouse problem by connecting to two additional USB ports that only seem to send data directly through them. This means that when you switch computers, your operating system will toggle the keyboard and mouse on and off, just like the display. It can drive keyboards, mice and operating system software crazy. My backlit keyboard climaxes every time I toggle, but it seems to recover after a second or two. The mouse handles it well. Well, as anyone who has used KVM knows, when booting a computer, you should always select the computer and not switch until the operating system has started. Most computer boot firmwares are unhappy with missing monitors and keyboards. They tend to freeze and not come back. On the other hand, they misjudge your keyboard and mouse model and refuse to function correctly until you reboot with peripherals attached. It's important to know that I understand this before reading the next paragraph. The only problem I couldn't get around was that I have a couple of home computers, one with ASUS and the other with a gigabyte motherboard. Both machines boot fine when connected to my 4K hardware, but they don't boot when connected via KVM and nothing is shown to explain to me why. One of them boots when connected to an HD monitor via KVM, the other does not. I don't know why and this kind of problem is hard to debug. ASUS just freezes and Gigabyte complains about bad overclock settings and keeps rebooting. I know Gigabyte only complains about overclocking because the message comes up when I connect directly to a monitor. My Dell laptop doesn't boot via KVM, but if you open the lid before booting, it will boot fine. My Dell Tower boots and runs fine. I bought this Startech KVM to replace my old Avocent KVM which had none of these issues but could only support a single link DVI monitor. I didn't have any of these issues with Avocent, although my keyboard started flashing and had to be unplugged and plugged back in about once a week. WASD said my Avocent was the problem and I believe them. I've come to the conclusion that no KVM is perfect. Over the last 20 years I have owned or regularly used half a dozen KVMs at home and at work. Most of them had nasty quirks because it's very difficult to create a KVM that works with all the hardware. I've come across a few that I haven't been able to use and this is one of them. Despite a great 4K 60Hz display, it didn't work for me and I had to return it. This KVM is definitely worth considering if you have regular old-brand computers, a standard keyboard, and a wired mouse. . First, it's a lot cheaper than the competition. This could work for you and save you tons of money. Hopefully.