Overview

Bring two computers into one simple monitor setup without keeping separate keyboards, mice, and peripherals for each system. T121 lets you move between computers from the same desk while keeping your display, everyday USB devices, audio, and network connection together.

It is a practical fit for work-and-personal computer setups, compact home offices, and anyone who wants to manage two systems without constantly moving cables or duplicating desktop equipment.

Keep Two Computers at One Simple Desk

Use one monitor, keyboard, and mouse for both computers instead of maintaining two separate setups. Keep both systems ready to use while reducing unnecessary equipment around your workspace.

Enjoy Clear 4K Display Quality

Work with sharp text, detailed images, and smooth everyday visuals at up to 4K@60Hz. T121 also supports higher refresh rates at 1080p for compatible displays and source devices.

Keep Your Display More Consistent When Switching

EDID Emulation helps your computer and monitor maintain more consistent display communication when moving between systems, reducing unnecessary display re-detection and helping your setup return more smoothly after switching.

Share the Devices You Use Every Day

Keep USB peripherals, audio devices, and a wired network connection available from the same KVM setup instead of unplugging and reconnecting accessories every time you change computers.

Get More Reliable Keyboard & Mouse Control

Choose between Pass-Through Mode and Traditional Emulation Mode depending on your keyboard and mouse. This gives you more flexibility when using multifunction devices or when extra compatibility is needed.

Switch Computers the Way That Feels Natural

Change computers from the front panel, use keyboard hotkeys, or switch with the mouse wheel. Auto Scan is also available when you want the KVM to cycle through connected computers automatically.

DOWNLOADS & MANUAL

Technical Details

Specifications
Features
  • EDID Emulation
  • Keyboard & Mouse Pass-Through and Traditional Emulation Modes
  • USB 3.2 Gen 1 Peripheral Sharing
  • 100 Mbps Ethernet Sharing
  • Auto Scan
  • Customizable Hotkey
Display Support
  • 3840 × 2160 @ 60 Hz
  • 2560 x 1440 @ 120 Hz
  • 1920 × 1080 @  240 Hz
Connections

• PC Inputs

  • 2 × HDMI
  • 2 × USB-B
System Compatibility
  • Windows
  • macOS
  • Linux (Ubuntu, Debian, Fedora, etc.)
  • Raspberry Pi OS
  • Unix
  • Other Linux-based Systems
• Display Outputs
  • 1 × HDMI

• Shared Ports

  • USB 3.2 Gen 1 Peripheral Port(s)
  • Dedicated Keyboard/Mouse USB Ports (USB 1.1)
  • 1 × 3.5 mm Audio/Mic
  • 1 × 100 Mbps Ethernet

• Control
1 × Wired Remote Port (Sold Separately)

Power
  • DC 12 V / 3 A

Included in the Box

  • T121 KVM Switch

  • 2 * USB-A to B Cables

  • DC 12V Power Adapter

  • User Manual

Customers praised this 2-port switch for preserving desktop settings via EDID emulation and enabling fast switching between computers. Shoppers appreciated the USB 3.0 ports, included cables, ethernet port, and distinctive design. Setup was simple, and the switch stayed stable with rubber feet. Some noted the manual could be clearer.

Ports (positive)Quality (positive)Desk (positive)Setup (positive)Cables (positive)
  • 5 stars: 8 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous

This switch does the most important thing a switch should do: preserve your desktop settings and let you easily switch between two systems.
Here's what stands out to me:

✅ #1 most important: EDID desktop emulation keeps your desktop arrangement live when jumping between systems.

✅ Multiple switching methods; button, keyboard shortcut, and remote port option all work well.

✅ Transitions are fast no matter which switching method you use.

✅ Unit feels very stable; it has good weight and rubberized feet so it doesn't slide around, even with several cables pulling on it.
✅ Love the RJ45 network port; a great space saver for splitting your network cable needs.

✅ Audio port is handy for analogue setups.

☑️ Manual isn't the greatest for anyone new to KVM setups.
☑️ Remote port is great but no remote is included in the box.

☑️ I'm not exactly sure about these special combined cables. They work great but are they proprietary? If so, they may be diffictult to replace during a fault.

✅ Cable management friendly overall with combined USB and HDMI cabling; helped clean up my desk a lot.

I'm really enjoying this switch so far but if there are any changes in its quality or my opinion, I'll be sure to report back in. 🤞 I hope you found my notes, pictures useful. Be well! ❤️‍🔥

C
Cainiac

This KVM switch is used to run two PCs to a shared monitor, but that's not all. It also works as an ethernet splitter.

This KVM switch helps minimize the tangled mess of cables by eliminating the spitter (it's buggy anyway), the extra keyboard and mouse, and the USB hub (I will likely still use the hub for various accessories). I was going to try an HDMI splitter intended for TV to share my large primary monitor between the two PCs, but this is better. This way I can easily use my new really big monitor for both, while avoiding inevitable multiple keyboard and mouse confusion
The KVM switch has a plastic case (seems like ABS). The device is very lightweight, but the rubber feet keep it well planted on the desktop. Built quality is fine (note that I have not opened it up to inspect inside).

The on/off switch and PC1/PC2 switch are on the front panel and are quite intuitive. There's also a headphone jack, two USB-A accessory jacks, and a UART control port for advanced control devices for external hardware such as micro controllers. I haven't done anything with that feature yet.
Overall build quality is very good, and the box doesn't get hot. All the ports are well-mounted and sturdy. The purple color of the case is an interesting design choice that's OK with me. Finally, it's not glitchy, which is very nice.

Give this a shot if you want to share a mouse, keyboard, and monitor between 2 PCs. It's a neat way to do that.

A
Anonymous

I bought this to switch between my work laptop and desktop, and it's been working flawlessly. Switching is quick, the video stays stable, and the USB 3.0 ports are noticeably faster when I connect an external SSD. Setup was simple since all the required cables were included. The plastic housing is lightweight but feels well put together, and everything has been reliable so far. For the price, this is easily one of the best HDMI KVM switches I've used.

C
Crazy

I set this KVM switch up with two computers sharing one monitor, keyboard and mouse and it cleaned up my desk more than I expected. Once everything was connected correctly, switching between the two systems was quick and stable. The front button is simple to use, and the hotkey option is handy when I do not want to reach across the desk. Picture quality looked sharp at 4K, and the display stayed properly recognized when moving back and forth between computers. I also like having extra usb-a ports for shared accessories, plus the network and audio connections make this more useful than a basic switch. The plastic case is lightweight, but the ports feel secure and the rubber feet keep it from sliding around. Setup takes some patience because each computer needs both HDMI and USB connections. This is best for someone running two desktop computers or mini PCs from one main workspace. It is a good value for the number of connections and switching options included.

A
Anonymous

Honestly, this feels like a much more expensive KVM. Setup was easy, and switching between my work PC and personal desktop is smooth every time. I also love the blue finish—it gives my desk a cleaner, more modern look. Amazing value for the money.

C
Charles

Really impressed with the quality for the price. The USB 3.0 ports are fast enough for my external SSD, and the included cables saved me from buying anything extra. It feels well made, and the blue design is a nice change from the boring black boxes everyone else sells.

H
Hanna

This cleaned up my desk instantly. One keyboard, one mouse, one monitor for both of my PCs, and I don't have to swap cables anymore. The hotkeys work great, switching is fast, and the picture comes back without any flickering. Super happy with this purchase.

A
Anonymous

I wasn't expecting to like this as much as I do. The blue finish looks way better in person than the typical black or silver KVMs, and it actually looks good sitting on my desk. Setup took maybe 10 minutes, switching is quick, and everything just works. Definitely one of the best values I've found under $100.

Product comparison

Amount of Computers

2

Amount of Computers

2

Amount of Computers

2

Amount of Monitors

1

Amount of Monitors

1

Amount of Monitors

1

Video Type

HDMI 2.0

Video Type

HDMI 2.0

Video Type

DisplayPort 1.2

Max Resolution

4K60Hz

Max Resolution

4K60Hz

Max Resolution

4K60Hz

EDID Emulation

Yes

EDID Emulation

YES

EDID Emulation

NO

Special Features

  • USB3.0 Sharing Port * 2
  • 3.5mm Audio/Mic Combo Jack
  • 100Mbps Ethernet Port
  • Hot Plug
  • Passthrough Mode

Special Features

  • USB-A 2.0 Sharing Port * 1
  • Hot Plug
  • Passthrough Mode
  • L/R Out

Special Features

  • USB-A 2.0 Sharing Port * 1
  • Hot Plug
  • Passthrough Mode

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FAQs

Please read our FAQs page to find out more.

More FAQs

Does T121 support 4K monitors?

Yes. T121 supports resolutions up to 3840×2160 at 60Hz and is also compatible with lower resolutions.

Can I use one keyboard and mouse with two computers?

Yes. T121 allows two computers to share a single monitor, keyboard, and mouse, making it easy to switch between systems from one workstation.

What devices can I connect to the USB 3.0 ports?

The USB 3.0 ports support a variety of peripherals, including USB flash drives, printers, webcams, headsets, and other USB devices.

Can I share audio between two computers?

Yes. T121 supports sharing audio through the built-in 3.5mm Audio/Mic Combo Jack and compatible USB audio devices connected to the USB 3.0 ports.

Does the Ethernet port switch with the selected computer?

Yes. The LAN connection follows the active computer, allowing both systems to share a wired network connection.

How can I switch between computers?

You can switch using the front-panel button, keyboard hotkeys, mouse gestures, or Auto Scan mode. An optional wired remote is also available separately.

Can I change the default hotkey?

Yes. T121 uses Right Ctrl as the default hotkey and allows users to customize hotkey combinations to fit their preferences.

Will my display settings stay the same when switching?

T121 uses EDID emulation to help prevent screen flickering, resolution changes, and window rearrangement during switching.

Does T121 work with Windows, macOS, and Linux?

Yes. T121 supports Windows, macOS, Linux, Raspberry Pi OS, and other Linux-based operating systems.

Do I need to install any software?

No. T121 is plug and play and does not require drivers or software installation.

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