The HP Agilent 6624A is a used Power Supply rated as shown. 0 - 7 VDC, 5 AMP 0 - 20 VDC, 2 AMP 0 - 20 VDC, 2 AMP 0 - 50 VDC, .8 AMP Programmable Quad GPIB programming of voltage and current Measured voltage and current read-back over the GPIB Two outputs can be connected in parallel or in series Automatic selection of operating voltage and current range Programmable over-voltage and over-current protection Self-test occurs at power-on from an GPIB command Electronic calibration via GPIB 10 store-recall states SCPI (Standard Comments for Programming Instruments) VXI plug&play drivers