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© National Instruments Corporation 5 NI USB-622x/625x/628x OEM User Guide
I/O Connector Pinouts
Figures 4 through 9 show the connector pinouts for 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.
Refer to the M Series User Manual at
ni.com/manuals for more
information about USB-622x/625x/628x signals and how to connect them.