# NanoKVM-USB
> Finger-sized 4K USB KVM for Server/SBCs
## Introduction
The NanoKVM-USB is a convenient tool for operations and multi-device collaboration. It allows you to perform maintenance tasks without the need for a keyboard, mouse, or monitor. Using just a single computer and no additional software downloads, you can start graphical operations directly through the Chrome browser.
NanoKVM-USB captures HDMI video signals and transmits them to the host via USB 3.0. Unlike typical USB capture cards, NanoKVM-USB also captures keyboard and mouse input from the host and sends it to the target machine in real-time, eliminating the need for traditional screen and peripheral connections. It also supports HDMI loop-out, with a maximum resolution of 4K@30Hz, making it easy to connect to a large display.
## Technical Specifications
| | NanoKVM-USB | Mini-KVM | KIWI-KVM |
| --- | :---: | :---: | :---: |
| HDMI Input | 4K@30fps / Pro 4K@60fps | 1080P@60fps | 4K@30fps |
| HDMI Loopout | 4K@30fps / Pro 4K@60fps | None | None |
| USB Capture | 1080P@60fps / Pro 4K@60fps | 1080P@60fps | 1080P@60fps |
| USB Interface | USB3.0 | USB2.0 | USB3.0 |
| USB Switch | Yes | Yes | No |
| Keyboard & Mouse | Yes | Yes | Yes |
| Clipboard | Yes | Yes | Yes |
| Software | No setup needed, works in Chrome | Host App required | Host App required |
| Latency | 50-100ms | 50-100ms | 50-100ms |
| Volume | 57x25x23mm | 61x13.5x53mm | 80x80x10mm |
| Shell Material | Aluminum Alloy | Aluminum Alloy | Plastics |
| Color | Black / Blue / Red | Black | Black |
| Price | `$39.9/$49.9`, Pro `$59.9/$69.9` | `$89 / $109` | `$69 / $99` |
> **Note:** For the best experience, please use a USB 3.0 cable to connect the device.
## Resources
We offer two versions of the application: [Browser](https://github.com/sipeed/NanoKVM-USB/tree/main/browser) and [Desktop](https://github.com/sipeed/NanoKVM-USB/tree/main/desktop). Both are available on the [Releases page](https://github.com/sipeed/NanoKVM-USB/releases).
### Browser Version
Access our online service at [usbkvm.sipeed.com](https://usbkvm.sipeed.com).
For self-deployment, download the `NanoKVM-USB-xxx-browser.zip` and serve it. Refer to the [Deployment Guide](https://wiki.sipeed.com/hardware/en/kvm/NanoKVM_USB/development.html) for details. If you are using Docker, simply run `docker-compose up -d`.
> Please use the desktop Chrome browser.
### Desktop Version
Download the appropriate package for your operating system and install it.
> For Linux users, a permission error may occur when connecting to the serial port.
> To resolve this run the commands below matching your system, then log out and log back in or restart your system.
> #### Debian
> `sudo usermod -a -G dialout $USER`
> #### Arch
> `sudo usermod -a -G uucp $USER`
## Where to Buy
* [AliExpress Store]() (To be released)
* [Taobao Store]() (To be released)
* [Pre-sale Page](https://sipeed.com/nanokvm/usb)