Keysight technologies usb power supplies keysight technologies u2722a opt 902 abd the u2722a power supply from keysight technologies is a 3 channel 20v120ma usb modular source measurement unit which can handle a 4 quadrant operation the channels can be connected in series or in parallel to achieve up to 60v360 ma a high speed usb 20 interface provides ease of connectivity and allow users to set up and configure their tests swiftly this device can serve as a power source and electrical