Changes

* For use with raspberry pi zero 2 w, [[X630-A4]] V1.1 (PiKVMKVM-A4) allows to use [[C296]] aluminum heatsink with your raspberry pi zero Raspberry Pi Zero 2 wW, but user need to prepare 4pcs M2.5*7mm screws yourself.The new version KVM-A4 V2.0 does not support [[C296]] aluminum heatsink installation, please use the ordinary heatsink for the CPU of Raspberry Pi Zero 2 W.