--- product_id: 541854208 title: "HKS0401A3U" brand: "tesmart" price: "€ 348.09" currency: EUR in_stock: true reviews_count: 8 category: "Te Smart" url: https://www.desertcart.at/products/541854208-hks0401a3u store_origin: AT region: Austria --- # USB 3.0 with 5Gbps transfer 4-in-1 HDMI KVM switch 4K@60Hz Ultra HD support HKS0401A3U **Brand:** tesmart **Price:** € 348.09 **Availability:** ✅ In Stock ## Summary > 🎮 Master your multi-device domain with lightning-fast 4K clarity! ## Quick Answers - **What is this?** HKS0401A3U by tesmart - **How much does it cost?** € 348.09 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/541854208-hks0401a3u) ## Best For - tesmart enthusiasts ## Why This Product - Trusted tesmart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Blazing Fast USB 3.0 Hub:** Share peripherals & charge devices with ultra-fast 5Gbps data transfer—10x faster than USB 2.0. - • **Effortless Switching Your Way:** Switch via remote, hotkeys, button, or mouse wheel—flexibility that keeps you in control. - • **Seamless Multi-Device Control:** Connect 4 computers to 1 monitor, keyboard & mouse for ultimate workspace efficiency. - • **Crystal Clear Audio Integration:** Built-in mic and L/R audio output for flawless communication during gaming or video calls. - • **Stunning 4K Visuals with Zero Hassle:** Supports 4K@60Hz, HDR10, Dolby Vision & EDID emulators to keep your display settings perfect. ## Overview The TESmart HKS401-P23 is a professional-grade 4-in-1 HDMI KVM switch designed for multitasking pros and gamers. It supports seamless switching between four computers using a single keyboard, mouse, and 4K monitor at 60Hz. Featuring USB 3.0 for rapid peripheral sharing and charging, integrated microphone and audio outputs, plus advanced EDID emulators, it ensures smooth, lag-free operation and crystal-clear visuals. Multiple switching methods including remote control and hotkeys provide ultimate convenience, making it a versatile hub for complex setups across Windows, Mac, Linux, and more. ## Description Product description TESmart 4 Port USB3.0 HDMI KVM Switch 4 PCs Share USB 3.0 device The extra integrated USB 3.0 ports works with USB peripherals like printer, scanner, webcam and hard disk between 4 computers with super-speed data transfer rate up to 5Gbp/s. Meet more demands at work. USB 3.0 with Power Supply The USB 3.0 (USB-A) port has a built-in charging module which can support charging your devices like mobile phones and tablets connected to the front panel port. Integrated Microphone and L/R Audio Output Your audio experience will be more diverse. You can not only experience immersive audio, but also be able to make conversations while meeting/game via the microphone. Seamless Keyboard and Mouse Switching Available to use keyboard and mouse without any delay after switching input sources. No delay, zero delay, no need to reinstall the driver. Use it smoothly and improve your work efficiency or gaming experience. 3 Convenient Switch Modes 1. Hotkey Switching: Press scroll lock+ scroll lock+... or the right ctrl+ the right ctrl+... 2. One-button Switching: Switch 4 signal sources in the extended mode by the panel button. 3. IR Remote Control( without AAA battery). K&M Pass Through Mode A higher level of keyboard and mouse compatibility. This 4 port HDMI KVM Switch is compatible with most wired, wireless, mechanical and gaming keyboard and mouse. Does this KVM support seamless switching? Keyboard and mouse switch seamlessly, while video switching completes within 2–3 seconds—typically under 1 second in lab tests. Actual time may vary by cable quality, port oxidation, or transmission distance. Does this KVM Support Both Mac and Windows Environments? Yes. TESmart KVM Switches support multiple OS, including Windows, macOS, Unix, and Linux systems like Debian, Ubuntu, Fedora, and Raspbian (with Raspberry Pi). It runs smoothly in mixed-OS environments without any extra setup. Does this KVM switch support firmware upgrades? Yes. TESmart offers official firmware updates to fix issues and improve compatibility; updates carry risk—don't update a working unit. If required, proceed under TESmart technical support guidance for correct firmware and instructions. Can I use the KVM right out of the box, and are cables included? Yes, it is plug-and-play with no drivers required. We provides 4 HDMI 2.0 cable and 4 USB A-B cable. Monitor HDMI cables are not included to reduce waste, as monitors typically come with cables. Review: Great KVM at a reasonable cost for 4 computers or HDMI-based devices - Great KVM at a reasonable cost for my setup (I have 4 computers). This is the second product I bought from this company, and so far a definite improvement over the earlier version a few years back. I appreciate that the somewhat annoying beep when switching ports was removed. I mounted it underneath my desk because I use an L shaped desk and the monitor and keyboard are in the corner. Remote works great, but you can also use hotkeys to switch. So far my keyboard and mouse (both wireless) work flawlessly, including scroll-wheel etc, on both macs and windows machines. Resolution on the hdmi is crisp and without artifacts. Sounds works well, just as expected. Did not test microphone as my setup is different. I have not had a chance to test the new usb 3.0 passthrough port, but looking forward to connecting a drive to make cross-platform data sharing much easier than dealing w/ the networking between macs and windows. Great support as well from the TESmart team, they quickly responded to an issue I had with my earlier device from 4 years ago and gave me a reasonable path to resolution. Review: Significant issues from the start, one key feature finally failed utterly - Update after 3 months of use: The issue with the keyboard skipping characters never improved and was becoming more and more of a problem since I use this thing for work, and am on a computer a large part of the day. Transposed characters (e..g "dgo" when I meant to type "dog") happened too often to be operator error. I'd been debating moving it back to my pre-TESMart configuration (mechanical keyboard connected to a powered USB hub, and that USB hub connected to the KVM) for quite some time, but I didn't want to give up the keyboard switching feature. I put up with it for far too long. Well, keyboard switching gave up the ghost yesterday. No clue why - I had not reconfigured anything. Just ctrl-ctrl-1 (etc.) no longer did anything. Turning it off and on did not fix things. at this point, there was absolutely no reason to try to put up with the other problems any more. I moved the keyboard to the external hub, plugged that into the KVM, and suddenly typing has become massively more accurate. I've lost the ability to switch via the keyboard, but the remote works (for now.....). I'll have to Velcro it to the keyboard so it's always handy. All in all, this has been a huge waste of money. I should have gotten a less expensive KVM that did NOT claim to be compatible with mechanical keyboards, and just included a remote. Update after a week of use: The keyboard switching works just fine - ctrl-ctrl-1 / 2 / 3 / 4 switches computers quite nicely. The remote does as well. But I'm downgrading to 2 stars, because I'm having MAJOR problems with keystrokes not registering. For example "Mary Had A Little Lamb" will show up as "MaryHa A Little Lam". It also seems like more swapped letters are happening, e.g. I type "Lamb" and see "Labm". I don't know if that's an artifact of the keyboard's connection, or if it's operator error - I certainly can make such mistakes, so I don't insist that the switch is the problem. I did make sure things were plugged in correctly and securely, which has not solved the problem. My next step will be to try plugging the keyboard into a powered external USB hub, then feed that to the KVM - precisely what I did before buying the TesMart. That would also render the hotkey switching useless - and that was the main reason I bought this model! Oh well, at least the remote should still work. ******************************************************************** (Since there are several models shown: I have the 4 port, 1 monitor, USB 3.0 model) I was using another brand of KVM, but when I switched to a Corsair K70 mechanical keyboard, I found that I'd lost the ability to switch computers using keyboard hotkeys. In fact, to get it to work at all, I had to plug both cables into a powered USB hub, and feed THAT to the device - otherwise, it either didn't work at all or the computer showed garbage when I tried typing. The other device didn't have a remote, either, so when I wanted to switch, I had to lean up to where the KVM was mounted (not within easy reach) to make the switch. TESmart claimed that theirs works with mechanical keyboards, so I gave it a try. Observations after having JUST set it up: - Keyboard switching DOES work. That was the sole reason I went for this new KVM switch. - Mouse gesture switching does not (may be operator error, but I never used that before, so I'm not too worried). I'll likely play with it some more - may have disabled when I meant to enable, or something. - The included cables really are needed: the computer-to-device plug is a different one than my older device. Both are USB-B, but apparently the 3.0 version of USB-B is actually configured differently. So if, like us, you've got a pile of USB-B cables lying around, they won't help you here. - The included cables are QUITE stiff. My setup involves wire shelving, with a shallow shelf for the KVM; the cable stiffness meant that attaching them all, and shoving the whole mess back onto the shelf, was more of a challenge than it needed to be. At some point I may purchase separate USB-B 3.0 cables to see if that's easier to manage, though I don't anticipate needing to move things around all that often. I also worry a bit about the stiff cables putting stress on the computer ports they are attached to. - The product description claims there is no delay when switching. That is simply not true - I counted, and it's roughly 3 seconds before the new computer's screen shows. Not a big deal for my purposes, but if you need a truly instantaneous switch, this may not be the right device for you. - Pass-through functionality is not perfect. My keyboard has a USB port on it - which I frequently use to plug in my USB headset. This simply did not work: the computer did not detect the headset. Weirdly, it worked just fine when I tried plugging a spare mouse into the keyboard. I don't know if this has anything at all to do with the switch's audio functionality (which I have not explored, as I don't need it). The headset works fine when plugged into the port on the front of the switch, so I'll likely just do that. Still, it's annoying. I have both keyboard cables plugged into the kb/mouse USB plugs, and the mouse plugged into the other plug on the back of the device. I may try alternate configurations (e.g. moving one of the keyboard plugs to the alternate) to see if that solves the passthrough issue. If so, I'll update this review. ## Features - HDMI KVM Switch 4 IN 1 OUT: HDMI KVM switch is perfect for hooking up 4 desktops or laptops to share 1 set of keyboard, mouse and 1 monitor for home and office setup, gaming consoles and streaming devices. Experience the convenience and efficiency of multi-device management - "Blast, Fast, Past" with USB3.0: The integrated USB 3.0 port offering charging your phone. It allows you to share USB peripherals like printer, scanner, webcam and hard disk between 4 computers with data transfer rate up to 5Gbp/s (10 times faster than USB 2.0) - Integrated Microphone and L/R audio Output: Supports connecting a headset, combining audio output and input. This enables clear two-way communication while enjoying audio, perfect for gaming, video conferencing, and customer service scenarios - Ultra HD 4K@60Hz and EDID Emulators: The Resolution is up to 3840x2160 (4K) @60hz, 3440x1440@100hz, 2560x1440@120Hz and downward compatible, Support 3D, HDR10, HDCP2.2, and Dolby Vision delivering more exquisite and authentic video on your screen. With EDID emulators in each input port, your computers always receive the correct display information and preventing displays setting change while switching inputs. Free you from the hassle of constantly adjusting display settings - Say Goodbye to the Annoying“Ding-Dong”: Keyboard and Mouse Seamless Switching, No delay, zero latency keyboard and mouse switching makes your use smooth and enhance your work efficiency or gaming experience. No more tangled wires or juggling multiple keyboards and mice - Switching Made Easy: Our KVM provides 4 switching options to suit your needs. Whether you prefer using the IR remote(AAA batteries not included), button, hotkey, and mouse wheel, you can easily switch between HDMI sources and manage your devices with ease - High Compatibility with Your Keyboard and Mice: The upgraded pass-through mode of 4 In 1 Out KVM Switches makes it widely compatible with more keyboards and mice, including wired, wireless, mechanical, and gaming K&M (Not support wireless bluetooth K&M) - Convenient Hot Plug: Easy to set up. Plug and play, no software required. Easily add or remove devices without needing to power off the KVM switch or other connected devices, saving your time and hassle. Ideal for multi-tasking professionals and gamers who need to access multiple devices quickly and efficiently - Wide OS Compatibility: TESmart KVM switch 4 computers supports various operating systems including Unix, Windows, Debian, Ubuntu, Fedora, Mac OS X, Raspbian, Ubuntu for Raspberry Pi and other Linux basic systems, making it a versatile selector for multiple devices to be used flexibly with different OS without the need for additional software or drivers - Packing List & Service: This KVM Switch kit comes with 1* 4X1 HDM KVM Switch, 4* 5ft KVM cables, 1* IR remote control, 1* DC 12V power adapter, 1* User manual. Plus, enjoy 1-year warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C617965F | | Audio Output Mode | Stereo | | Best Sellers Rank | #42 in KVM Switches | | Brand | TESmart | | Cable Type | HDMI | | Color | Black | | Compatible Devices | Desktops and laptops with HDMI outputs running Unix, Windows, Debian, Ubuntu, Fedora, Mac OS X, Raspbian, Ubuntu for Raspberry Pi, and other Linux basic systems Compatible Devices Desktops and laptops with HDMI outputs running Unix, Windows, Debian, Ubuntu, Fedora, Mac OS X, Raspbian, Ubuntu for Raspberry Pi, and other Linux basic systems See more | | Connector Type | Plug In | | Connector Type Used on Cable | Plug In | | Customer Reviews | 3.5 out of 5 stars 64 Reviews | | Item Weight | 1.01 Pounds | | Manufacturer | TESmart | | Mfr Part Number | TES-HKS0401A3U-USBK | | Model Number | HKS401-P23 | | Number of Ports | 5 | | Power Source | DC power supply | | Smart Home Compatibility | Not Smart Home Compatible | | Unit Count | 1.0 Count | ## Product Details - **Brand:** TESmart - **Connector Type:** Plug In - **Contact Type:** Normally Open - **Current Rating:** 3 Amps - **Item dimensions L x W x H:** 11.81 x 4.33 x 1.18 inches - **Material:** Metal - **Operating Voltage:** 12 Volts (DC) - **Operation Mode:** ON-OFF - **Switch Type:** Push Button - **Terminal:** Solder ## Images ![HKS0401A3U - Image 1](https://m.media-amazon.com/images/I/71FWMpaHqgL.jpg) ![HKS0401A3U - Image 2](https://m.media-amazon.com/images/I/71Lrp24Tu+L.jpg) ![HKS0401A3U - Image 3](https://m.media-amazon.com/images/I/61-pDBp049L.jpg) ![HKS0401A3U - Image 4](https://m.media-amazon.com/images/I/81fsAs5lUqL.jpg) ![HKS0401A3U - Image 5](https://m.media-amazon.com/images/I/7170JETgYqL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great KVM at a reasonable cost for 4 computers or HDMI-based devices *by P***Y on September 8, 2025* Great KVM at a reasonable cost for my setup (I have 4 computers). This is the second product I bought from this company, and so far a definite improvement over the earlier version a few years back. I appreciate that the somewhat annoying beep when switching ports was removed. I mounted it underneath my desk because I use an L shaped desk and the monitor and keyboard are in the corner. Remote works great, but you can also use hotkeys to switch. So far my keyboard and mouse (both wireless) work flawlessly, including scroll-wheel etc, on both macs and windows machines. Resolution on the hdmi is crisp and without artifacts. Sounds works well, just as expected. Did not test microphone as my setup is different. I have not had a chance to test the new usb 3.0 passthrough port, but looking forward to connecting a drive to make cross-platform data sharing much easier than dealing w/ the networking between macs and windows. Great support as well from the TESmart team, they quickly responded to an issue I had with my earlier device from 4 years ago and gave me a reasonable path to resolution. ### ⭐ Significant issues from the start, one key feature finally failed utterly *by V***R on November 13, 2023* Update after 3 months of use: The issue with the keyboard skipping characters never improved and was becoming more and more of a problem since I use this thing for work, and am on a computer a large part of the day. Transposed characters (e..g "dgo" when I meant to type "dog") happened too often to be operator error. I'd been debating moving it back to my pre-TESMart configuration (mechanical keyboard connected to a powered USB hub, and that USB hub connected to the KVM) for quite some time, but I didn't want to give up the keyboard switching feature. I put up with it for far too long. Well, keyboard switching gave up the ghost yesterday. No clue why - I had not reconfigured anything. Just ctrl-ctrl-1 (etc.) no longer did anything. Turning it off and on did not fix things. at this point, there was absolutely no reason to try to put up with the other problems any more. I moved the keyboard to the external hub, plugged that into the KVM, and suddenly typing has become massively more accurate. I've lost the ability to switch via the keyboard, but the remote works (for now.....). I'll have to Velcro it to the keyboard so it's always handy. All in all, this has been a huge waste of money. I should have gotten a less expensive KVM that did NOT claim to be compatible with mechanical keyboards, and just included a remote. Update after a week of use: The keyboard switching works just fine - ctrl-ctrl-1 / 2 / 3 / 4 switches computers quite nicely. The remote does as well. But I'm downgrading to 2 stars, because I'm having MAJOR problems with keystrokes not registering. For example "Mary Had A Little Lamb" will show up as "MaryHa A Little Lam". It also seems like more swapped letters are happening, e.g. I type "Lamb" and see "Labm". I don't know if that's an artifact of the keyboard's connection, or if it's operator error - I certainly can make such mistakes, so I don't insist that the switch is the problem. I did make sure things were plugged in correctly and securely, which has not solved the problem. My next step will be to try plugging the keyboard into a powered external USB hub, then feed that to the KVM - precisely what I did before buying the TesMart. That would also render the hotkey switching useless - and that was the main reason I bought this model! Oh well, at least the remote should still work. ******************************************************************** (Since there are several models shown: I have the 4 port, 1 monitor, USB 3.0 model) I was using another brand of KVM, but when I switched to a Corsair K70 mechanical keyboard, I found that I'd lost the ability to switch computers using keyboard hotkeys. In fact, to get it to work at all, I had to plug both cables into a powered USB hub, and feed THAT to the device - otherwise, it either didn't work at all or the computer showed garbage when I tried typing. The other device didn't have a remote, either, so when I wanted to switch, I had to lean up to where the KVM was mounted (not within easy reach) to make the switch. TESmart claimed that theirs works with mechanical keyboards, so I gave it a try. Observations after having JUST set it up: - Keyboard switching DOES work. That was the sole reason I went for this new KVM switch. - Mouse gesture switching does not (may be operator error, but I never used that before, so I'm not too worried). I'll likely play with it some more - may have disabled when I meant to enable, or something. - The included cables really are needed: the computer-to-device plug is a different one than my older device. Both are USB-B, but apparently the 3.0 version of USB-B is actually configured differently. So if, like us, you've got a pile of USB-B cables lying around, they won't help you here. - The included cables are QUITE stiff. My setup involves wire shelving, with a shallow shelf for the KVM; the cable stiffness meant that attaching them all, and shoving the whole mess back onto the shelf, was more of a challenge than it needed to be. At some point I may purchase separate USB-B 3.0 cables to see if that's easier to manage, though I don't anticipate needing to move things around all that often. I also worry a bit about the stiff cables putting stress on the computer ports they are attached to. - The product description claims there is no delay when switching. That is simply not true - I counted, and it's roughly 3 seconds before the new computer's screen shows. Not a big deal for my purposes, but if you need a truly instantaneous switch, this may not be the right device for you. - Pass-through functionality is not perfect. My keyboard has a USB port on it - which I frequently use to plug in my USB headset. This simply did not work: the computer did not detect the headset. Weirdly, it worked just fine when I tried plugging a spare mouse into the keyboard. I don't know if this has anything at all to do with the switch's audio functionality (which I have not explored, as I don't need it). The headset works fine when plugged into the port on the front of the switch, so I'll likely just do that. Still, it's annoying. I have both keyboard cables plugged into the kb/mouse USB plugs, and the mouse plugged into the other plug on the back of the device. I may try alternate configurations (e.g. moving one of the keyboard plugs to the alternate) to see if that solves the passthrough issue. If so, I'll update this review. ### ⭐⭐⭐⭐ Solid construction, begain to have problems after a year which needed firmware update to fix. *by M***N on March 31, 2026* The case is metal and feels solid. It uses proper USB 3 cables with USBA plugs on one end and USB-B 3.0 on the other. the buttons work well. I did have problems with it that developed after about a year. My keyboards wouldn't work on the proper keyboard socket in the back and it would lock up sometimes when switching from one PC to another, requiring me to power off the KVM switch and power it back on. I contacted the manufacturer 2 weeks, who sent me updated firmware by email. The updated firmware has fixed the problems. ## Frequently Bought Together - TESmart USB 3.0 HDMI KVM Switch 1 Monitor 4 Computers 4K@60Hz, L/R Audio & Microphone, 4 Port EDID Emulators, Hotkey Switching, Button Switching with Remote Switch and All Input Cables - BENFEI DisplayPort to HDMI Adapter, 10 Pack Gold Plated DisplayPort/DP from Computer/Laptop to HDMI from Monitor/TV/Projector Converter (Not Bi-Directional, Not Compact with USB Port) - MT-VIKI 2 Packs USB HDMI KVM Cable 10ft 4K HDMI USB A to HDMI USB B Twin Cord for Standard KVM Switch 10ft --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/541854208-hks0401a3u](https://www.desertcart.at/products/541854208-hks0401a3u) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-06-06*