NI AT-CAN/2 Dual Port Interface

NI PCI-8432/4 High Performance, Isolated 4-Port Serial Interface (RS-232)

USED NI PCI-8431-2 High-Performance 2-Port Serial Interface (RS485) Test passed

NI PCI-8431-2 High-Performance 2-Port Serial Interface (RS485) Test passed spot

NI PCI-232/4 Four-Port Serial Interface

NI National Instruments PCI-8430/4 4-Port RS23N2 Serial Interface Card w/ Cables

NI PCI-GPIB/LP High-Performance GPIB Interface for PCI

NI GPIB to SBX Interface Module