NI AT-232/2 2-Port ISA Serial Interface

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

NI AT-485/4 4-Port ISA Serial Interface

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

Audio Precision PCI-2 / PCI2 APIB ISA Interface Module

NI AT-CAN/2 Dual Port Interface

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

RF-8GHz-60DB Programmable Attenuator + Offline Board +Serial Port Adapter Cable