KVM (https://pikvm.org/) is a very powerful and Open Source Software which allows for a remote connection via your Raspberry Pi to turn on/off or restart your computer, configure the UEFI/BIOS, and even reinstall the OS using the Virtual CD-ROM or Flash Drive. You can use your remote keyboard and mouse or KVM can simulate a keyboard, mouse, and a monitor, which are then presented in a web browser as if you were working on a remote system directly. Its true hardware-level access with no dependency on any remote ports, protocols or services!

The KVM refers to Keyboard Video Mouse. The KVM-A3 kit is designed and based on Raspberry Pi 4 Model B, NOT support Raspberry Pi 3B/3B+.

For Raspberry Pi Zero 2W, pls refer to KVM-A4 Kit.

For KVM-A8 PCIe version based on Raspberry Pi 4, pls refer to: KVM-A8 Kit.

Features:

1. Designed especially for KVM (Open and cheap DIY IP-KVM based on Raspberry Pi)
2. Compatible with Raspberry Pi 4 Model B
3. Fully compatiblie with KVM OS
4. Control a server and computer using a web browser
5. HDMI Full HD capture based on the TC358743 chip
6. OTG Keyboard & mouse; Mass Storage Drive emulation
7. Hardware Real Time Clock (RTC) with CR1220 coin battery socket
8. Equipped with cooling fan that allows the heat from your Raspberry Pi to dissipate
9. Equipped with solidstate relays to protect RPi GPIO pins from computer and ESD spikes
10. ATX control via RJ45 connector Switch the machine on or off, reset it, and monitor the status of HDD LED & power LED remotely
11. Reserves the 10pin SH1.0 connector for future I2S HDMI audio support
12. Reserves the 4pin header & spacers for I2C OLED display

Package Includes:

1 x Geekworm KVM-A3 Kit for Raspberry Pi 4 Open-source KVM Over IP