Hi:
From the technical side, the NI-9263 won't work by itself as it is meant to be used with the cDAQ chassis, that for example contains the timing engine and the power source for the module.
One option could be to buy a cDAQ chassis for this, another option could be to buy a NI USB-6000. In either case I would recommend calling NI (for sales stuff (888) 280-7645) and they should be able to help you better with this.
Incidentally, if you've already spoken with NI and one of their sales engineers helped you in your purchase, they might accept the module you bought back.