Abstract: A data center testing device provides field technicians with resources to support multiple aspects of data center testing. The data center testing device includes multiple, integrated and removably connectable modules such as a base module, a user interface module, a testing module, and a battery module. The data center testing device may include a processor, a memory to store machine readable instructions executable by the processor to perform data center testing, an input/output (I/O) device comprising a display, a first connector port assembly comprising a first connection port and a second connection port, and a second connector port assembly comprising a third connection port and a fourth connection port.