This is the newest X825-C7 metal case with power control switch and cooling fan specially designed for Raspberry Pi 4 Model B&[[X825]] & [[X708]]/[[U100]]/[[X735]]. We design this X825-C7 case to provide a compelete Raspberry Pi NAS solution(X825 2.5" SATA HDD/SSD shield) with UPS function(reply on X708/U100).