Radxa Linkr: Tiny USB-Sized IP KVM for Remote PC Control

Radxa Linkr USB-Sized IP KVM

Radxa recently announced a tiny remote-control unit called the Linkr for logging into computers, servers and developer boards via a web browser. The unit provides a combination of HDMI video capture with USB keyboard and mouse emulation, so users can view and control a target system independent of the need to connect a dedicated monitor, keyboard or mouse.

Radxa Linkr is a small IP KVM, a bit larger than a USB flash drive, that transmits data to the target via HDMI and USB for video and keyboard and mouse emulation. The user can control it over USB-C, Ethernet or Wi-Fi client/access point, even before the OS boots. Linkr has a built-in Tailscale client, so users can access it from outside your local network. With a connection to a Tailnet, the device is reachable via an encrypted connection and no public IP address or manual port forwarding is needed.

Previously, we have covered several KVM solutions, including the Sipeed NanoKVM-Go, GL.iNet Comet 5G RedCap, Sipeed NanoKVM-USB, GL.iNet Comet PoE, Luckfox PicoKVM, GL.iNet Comet (GL-RM1) Remote KVM, and many more. Feel free to check out these KVM solutions if you’re interested in exploring more options.

Radxa Linkr IP KVM front and back side

Radxa Linkr Specifications:

• Processor:
  • SoC: Rockchip RV1106G3
  • CPU: Arm Cortex-A7 processor clocked at up to 1.2 GHz, accompanied by an integrated RISC-V co-processor
  • NPU: 4th-generation Rockchip NPU delivering up to 1 TOPS, with INT4, INT8, and INT16 hybrid quantization support
  • ISP: 3rd-generation high-performance 5MP Image Signal Processor
  • VPU: Hardware video engine supporting H.265/H.264 encoding at up to 3072 × 1728 (5MP) and 30 fps, along with 16MP JPEG snapshots at up to 60 fps
  • Memory: 256MB on-chip DDR3L
• Storage:
  • Optional 16GB eMMC flash storage
  • MicroSD card slot
  • Storage support for the operating system and virtual media images
• Video Input: HDMI input supporting resolutions up to 2K at 30 Hz
• Networking:
  • USB-C networking interface
  • USB-C-to-RJ45 10/100 Mbps Ethernet adapter included
  • Wi-Fi 6 connectivity via AIC8800
  • Supports both Wi-Fi client and hotspot modes
• USB Connectivity:
  • 1 × USB-C port for keyboard and mouse emulation
  • 1 × USB-C network port for direct connection to a PC or Ethernet connectivity through the supplied RJ45 adapter
• Controls and Indicators:
  • User-configurable button
  • Video Status LED for monitoring the HDMI input signal
  • System Status LED for indicating system operation
• Power: 5V/2A USB-C power input
• Dimensions: 70 × 22 × 12 mm

Radxa Linkr Peripherals

It additionally allows for access tokens for conventional automation programs and AI agents. The browser interface is available on Windows, macOS, Linux, iOS, Android and HarmonyOS devices. Compatibility with target systems is mainly dependent on the equipment having HDMI output and being able to accept standard USB keyboard and mouse input. Additional capabilities include Wake-on-LAN, virtual keyboard support, remote text input, configurable shortcuts, firmware modifications, and system log export. Radxa’s documentation lists several connection methods for different environments.  

Radxa Linkr operation modes

The Radxa Linkr is listed at $59 and up on Arace, AliExpress for $84.23,and Allnet for $69.99 but the Amazon store material is being sold out at the moment. Refer to the product page for additional information. 

Images used courtesy of Radxa.