Changes

* For use with raspberry pi 4, [[X630-A3]] (PiKVM-A3) equipped with a active cooling fan that cool your raspberry pi;* For use with raspberry pi 4, [[X630-A8]] (PiKVM-A8 PCIe version) equipped with a active cooling fan that cool your raspberry pi;* For use with raspberry pi zero 2 w, [[X630-A4]] (PiKVM-A4) allow allows to use [[C296]] aluminum heatsink with your raspberry pi zero 2 w, but user need to prepare 4pcs M2.5*7mm screws yourself.