The Keysight (formerly Agilent's electronic measurement technology) 34938T is a connection block for the 34938A 20-channel 5 amp form A switch. The block is designed for discrete wiring to connect wires with up to 20 AWG for approx. <100 connection changes or 24 AWG for> 100 connection changes. The block can be plugged into the switch module and secured with screws. It is therefore a flexible and simple method to do the wiring yourself.