This document provides dimensions, pinouts, and information about the connectors, switch, LEDs, and chassis ground of the USB-6221 OEM, USB-6225 OEM, USB-6229 OEM, USB-6251 OEM, USB-6255 OEM, USB-6259 OEM, USB-6281 OEM, and USB-6289 OEM devices.
USB-622x/625x/628x OEM User Guide