Keysight technologies u2500a series usb data capturing modules keysight technologies u2541a opt 902 abd the u2541a from the keysight technologies u2500 series of high performance usb data capturing modules can sample 250ksas with a resolution of 16 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 u2541a usb data capturing module