Keysight technologies u2751a usb modular switch matrix keysight technologies u2751a opt 902 abd the u2751a usb modular switch matrix from keysight technologies offers a flexible connection path between the device under test and the test equipment thus allowing different instruments to be connected to multiple points on the device under test at the same time the u2751a can support measurements at a high bandwidth of up to 45mhz it uses a high speed usb 2 0 interface 9472 allowing users