Fangrui Product Details What Is It: This Kit Allows User To Realize A Kvm Project With For Raspberry Pi 4 Model B Which Can Control A Computer Using A Web Browser. Compatiblity: For Use With For Raspberry Pi 4 Model B 8gb/4gb/2gb/1gb Only, Not Support For Raspberry Pi 3 Or Pi 5. Function: Remotely Turn On / Turn Off / Restart Your Computer; Configure Configure The Uefi / Bios; Reinstall The Os Using The Virtual Cd-rom Or Flash Drive; Remote Use Your Keyboard And Mouse; Simulate A Keyboard, Mouse, And A Monitor And Presented In A Web Browser, Etc. How To Power: Poe Power (recommend, Need A Poe Switch) Or Power Input: 5.1vdc +/- , Greater Than Equal 3a Power Via Usb-c Port Of X630-a8. How To Cool: X630-a8 Comes With An Onboard Active Cooling Fan To Cool Down The Raspberry Pi 4. Extra Needed To Prepare By Youself: For Raspberry Pi 4 Model B, Tf Card, Power Adapter (only Requires It If You Have No Poe Switch). User Manual:wiki.geekworm.com/pikvm-a8 Colour:black Material:pcb+electronic Components Package Contents: 1 X Pikvm-a8 K