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PiKVM v3 HAT for Raspberry Pi 4 PiKVM v3 is an open source KVM over IP device, based on the Raspberry Pi. It will help you manage servers or workstations remotely, regardless of the status of the operating system or whether it is installed! PiKVM v3 allows you to power on/off or reboot your computer, configure UEFI/BIOS and even reinstall the operating system using the virtual CD-ROM or a USB flash. You can use your remote keyboard and mouse, or PiKVM can simulate a keyboard, mouse and monitor, which are then presented on a web site as if you were working directly on a remote system. The PiKVM v3 HAT Board is designed to work with the Raspberry Pi 4 and provides the following features: HDMI capture device with max resolution 1080p 50Hz and audio support Keyboard & mouse emulation Mass storage emulation (ie, virtual flash drive or CD drive provided by image file saved on PiKVM) Ability to simulate "removal and insertion" for USB for above mentioned devices ATX controller (allowing to switch power even if target device is off or operating system hangs) Onboard real-time clock 5v PWM fan controller USB & RJ-45 serial console In the box: The PiKVM v3 HAT for Raspberry Pi 4 USB-C bridge board ATX adapter board Flat CSI-2 cable 7x colorful jumpers 4x brass standoffs 8x screws Wires for connecting the ATX interface to the motherboard Requirements To use PiKVM v3, you will need the following things, which are NOT included in the kit: Raspberry Pi 4 (any amount of RAM is OK) 5.1v 3A power supply with USB-C A regular HDMI cable USB-C to USB-A cable with DATA lines (for keyboard and mouse emulation) Straight Ethernet cable (NOT crossover, to connect the HAT board and ATX board) Micro-SD card at least 16 Gb and class 10 is strongly recommended Known issues & limitations The actual frame rate of the image received via HDMI will depend on the network bandwidth, resolution and the load on the Raspberry Pi. This is usually ~20-24 FPS for 1080p over LAN. AIMOS switches are not fully compatible with the video capture device (as with regular HDMI CSI bridge). There may be compatibility issues with some motherboards (such as HP or DELL) which are the same as those that exist with PiKVM v2. Not everything is perfect, but if you have already used PiKVM v2 – our new v3 will work perfectly and please you. If there is no image from the BIOS, you can fine-tune the HDMI settings, but it is possible that the USB keyboard or Mass Storage devices will not be available in the BIOS. Upcoming software features The audio capture device via HDMI works, but is not currently supported by PiKVM software. The fan controller operates at a constant speed, but will learn to adjust the speed smoothly in the future. Currently, MJPEG is used for video transmission, but you will soon get H.264 support. All of these features will be available in one of the future free updates of the operating system.