Keysight technologies usb power supplies keysight technologies u2723a opt 902 abd the u2723a power supply from keysight technologies is a 3 channel 20v120ma usb modular source measurement unit which can handle a 4 quadrant operation in addition to the standard device u2722a the u2723a offers a faster response time and integrated test scripts 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 an