Lenovo 03T6011 Rear I/O Board designed specifically for the ThinkCentre A70z All-in-One desktop. This replacement interface module provides essential connectivity, featuring an Ethernet RJ-45 port, three USB 2.0 ports, and a Serial (COM) port. The assembly includes the internal ribbon cabling and the metal mounting bracket for a secure fit within the chassis. Ideal for restoring peripheral functionality or repairing damaged ports on your A70z system.