5PP5IO.GNAC-00Brand: B&RMPN: 5PP5IO.GNAC-001x USB 2.01x RS232/422/4851x HDA sound1x Smart Display Link / DVICompatible with the PP500 and APC511 The 5PP5IO.GNAC-00 I/O board has 1x RS232/422/485 int...Request a quote