Keysight technologies u2500a series usb data capturing modules keysight technologies u2531a opt 902 abd the u2531a from the keysight technologies u2500 series of high performance usb data capturing modules can sample up to 2msas for each channel with a resolution of 14 bits single application is possible via the usb port of a pc but these device s can also be installed in a chassis for modular application keysight technologies u2531a usb data capturing module