








⚡ Elevate your dual-PC setup with 8K clarity and zero lag — because multitasking deserves the best!
The AV Access KVM Switch supports dual DisplayPort monitors with resolutions up to 8K@60Hz and 4K@165Hz, enabling seamless control of two computers via one keyboard and mouse. Featuring a high-speed USB 3.0 hub, included premium cables, and zero-latency switching with customizable hotkeys and IR remote, it’s designed for professionals and gamers demanding flawless multi-device productivity and immersive visuals.
































| ASIN | B0C4TB6Y67 |
| Batteries | 1 AAA batteries required. (included) |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Best Sellers Rank | 72,342 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 231 in KVM Switches |
| Colour | 8KSW21DP-DM |
| Customer Reviews | 4.0 4.0 out of 5 stars (238) |
| Date First Available | 30 Oct. 2023 |
| Item Weight | 2.05 kg |
| Item model number | 8KSW21DP-DM |
| Manufacturer | AV Access |
| Part number | 8KSW21DP-DM |
| Product Dimensions | 25.4 x 5.08 x 6.86 cm; 2.05 kg |
| Switch Type | 2-way |
| Wattage | 24 watts |
A**R
Flawless
This isn't the first KVM I've used. Previous ones had little things that were annoying-but-bearable-given-the-service. In some ways with this one I downgraded from the previous one, that could handle more computers, but was single screen and HDMI. But I only have two computers I really need to switch between daily, and I considered fewer cables was a very good thing (I like clean cable management, and the difficulty to get there goes up exponentially with the number of computers). Here are the things this one does better than what I've had in the past: - No weird reaction when proxying the keyboard. Sometimes, they will repeat your keypresses several times. Very annoying when it was Ctrl/Cmd+w in a web browser. - Build quality. It's really well made. - USB and audio connections at the front. It looks less clean on the desk, but my son can unplug the keyboard to plug it directly into the gaming PC (allegedly to shave a couple milliseconds in Geometry Dash), and my daughter can easily plug her own headphones in place of the speaker. If it's easier for them to do, it's easier for me to undo. - USB passthrough. It works with a fancy keyboard/mouse that has dedicated software. Other KVMs also work, but without USB passthrough, you only get the standard keyboard/mouse stuff (goodbye the volume and mute buttons). This is minor but nice. - Connections at the back are clever, as well as the centre of gravity. Especially for the AC adapter: it's screwed it and stays in sturdily. KVMs typically sit at the edge of the desk, naturally pulling on the cables in some cases. Lastly, a very nice-to-have that I don't think is documented on this product's page: hotkeys. It's obviously not the only product doing this, but I love it and it works beautifully. And, once again, very clever setup: it's trivial to change the key you want, and for it not to interfere with normal typing. After 10 days using it quite extensively, I have literally zero complaints.
M**.
So far so good... Where others have failed!
I've tried a couple of a cheaper KVM device sold on Amazon and both just wouldn't sync both monitors properly. This is a bit more expensive but comes with all the cables so might work out cheaper if you don't have cables, and I was also skeptical when the documentation said if you have issues use the supplied cables but I initially had issues with my original cables but when I swapped it for theirs it works fine. Works great even though I have quite an odd setup. Laptop with thunderbolt to 2xDP adapter and a desktop with a 2xDP GPU all going through the KVM switch into two DP monitors but one is old and is Displayport 1.0 and the other is even older so it's not even HDMI so has a active DVI to displayport adapter to make it DP compatible. Only thing I'd prefer is a wired remote button rather than the button cell remote but that's a minor gripe when I've finally found a switchbox that can cope with my setup!
P**R
Needed Some Tech Support but Great
To get the refresh rates I wanted I needed to purchase some DP 2.1 cables and then Kevin from AC Access assisted in a firmware update for the switch. Now I’m achieving 3440 x 1440 resolution at 120 Hz with my widescreen Dell Alienware monitor and I’m very happy with the stability and features.
C**E
Good product
Works perfectly, easy to install, all that was needed was inside the box
X**D
Failed after one week
I used this product to connect two pc computers to a 43-inch 4k monitor and it didn't like it. The monitor kept having a blank screen for about 10 seconds and after a week of this irritating behaviour it stopped working.
A**R
Alright, my new Docking Station, I had some pretty high hopes for this one, and while it didn't quite solve all my problems, it definitely made a significant dent in my desktop chaos. So, here's my honest take. My Background & What I Was Hoping For: My setup before this dock was a bit of a Frankenstein's monster: a 4-year-old ASUS laptop and a shiny new Mac Mini. I loved my Mac Mini for most things, but sometimes I just had to use Windows. I had two monitors, each connected to both computers, and I'd painstakingly switch inputs using the buttons on the back of the monitors. Let me tell you, that got old fast. So, usually, one monitor was for the Mac, the other for the ASUS. And don't even get me started on the chargers – separate ones for each, plus I was constantly plugging and unplugging my external speakers unless I wanted to suffer through the built-in laptop/Mac Mini speakers. When I stumbled upon this docking station, I thought, "YES! This is it!" I envisioned charging both my computers through it, a super tidy desk, and seamless switching between machines. Oh, the dream! Where My Dream Met Reality (and it's not the product's fault): Okay, here's where my bubble burst a little, but honestly, it's more about my old tech and my own oversight than the dock itself. Charging: My old ASUS laptop doesn't charge via TYPE-C, and neither does my Mac Mini (whoops, totally missed that detail when buying). So, the dream of one-cable charging for both vanished pretty quickly. That's on me, not the dock. Port Confusion: This is where it got a bit tricky. The "Computer 1" port on the dock is TYPE-C, and "Computer 2" is HDMI, DP, and USB-B (yes, USB-B, and it came with a cable that needs a USB-A end). My Mac Mini and ASUS both lack DP ports. ASUS as Computer 1: Working fine. Mac Mini as Computer 1: It only recognized one monitor. I guess because it's Apple. Mac Mini as Computer 2: No DP connection, and no USB-A port... The Good Stuff (Because There's Plenty!): Despite these hiccups, I'm genuinely happy with some aspects: Switching is FAST! Seriously, the KVM switching between computers is lightning quick. My Desk is Cleaner: Even without universal charging, getting rid of those extra cables connecting directly to my monitors is a huge win. It's definitely tidier. Still Usable (with a workaround): Thanks to my Logitech wireless keyboard and mouse! Future Proofing: I've ordered a USB-A to TYPE-C adapter for that USB-B cable, so once that arrives, I should be able to make my setup even tidier. Final Thoughts: This docking station isn't a magic bullet that solves all my specific legacy tech issues, but it's a very solid piece of hardware. The rapid switching is a joy, and it's brought a much-needed level of organization to my workspace. Just make sure you double-check your computer's port compatibility and charging capabilities before diving in! If your computers are more up-to-date with their TYPE-C and DP ports, I imagine this would be an absolute dream come true.
I**O
Quite expensive, but it is very good...no issue at all
A**S
Amazing product - Just not suitable for me as a Mac user, I need multiple displays for work not mirrored. Looking forward to the iDock M10 soon. Massive thanks to Johnny, from AV Acess for the support. Always contact support before you attempt to refund.
J**2
EDIT 1 YEAR LATER The flickering issue is completely gone after a year! I extend my gratitude to Kevin Pan of Technical Support for his invaluable assistance in updating the firmware and supplying new cables, which successfully resolved the problem. --- OMFG, I finally got this KVM working with my Alienware AW3420DW (the notorious flicker monster) and my Dell S2716DG monitor. Both have G-SYNC. No, I’m not a Vine Customer here to review this, though I wish I had gotten it for free considering all the hassle I've gone through to make this work. I was battling some serious flickering issues and spent two weeks juggling various 8k DisplayPort 1.4 and 1.2 cables, on the brink of returning this KVM and throwing in the towel. Just when I was about to give up and possibly set up a shrine to cables past, I stumbled upon 16k DisplayPort cables on Amazon. Naturally, I had to try them. I got two “uni DP Cable 2.1 16k” cables. One goes from the KVM to Monitor 1, and the other from the KVM to Monitor 2. I'm still using my old DP cables (which worked perfectly fine before the KVM), and they are now plugged into the KVM. Checked Refresh rate on both monitors and they are both good, 120hz and 144hz. Switching between my work laptop and gaming rig is straightforward with just the push of a button. No issues at all. It even remembers my window positions when switching back and forth. Now I am typing this review with no flicker in sight! I hope this helps anyone else trying to get this expensive machine to work with their setup!
M**O
It works perfectly. Exactly as described, fast switching between my usb-c laptop and my "legacy" connection desktop with two monitors.
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