The ETS-800 Test System natively supports I2C functionality to allow many I2C controlled peripheral devices to be utilized on the DIB or Family Board. This is very useful for adding support circuitry to aid in DUT testing. As site counts grow significantly and I2C communication increases, test time is impacted by the slowness of I2C coupled with the amount of communication required. This starts to eat into throughput via longer test times.SPI peripherals operate at much higher frequency or clock rates yielding significantly faster communication times compared to I2C. Historically, the ETS-800 does not natively support using SPI peripherals without utilizing HSD pins which takes resources away from testing the DUT. An underutilized resource on the ETS-800 are the PSQ signals dedicated to the DIB. There are 4 PSQ signal lines per sector to the DIB. This presentation will show how these 4 PSQ signal lines can be used to operate SPI protocol peripherals on the DIB or Family Board which will improve communication speed as well as open new opportunities to use more advanced circuitry that is not available with I2C.