National Instruments PXI-8420 RS-232 Serial Interface Module Card 185447D-01

National Instruments NI PXI-8331 MXI-4 Interface Card 188535D-01

National Instruments PXI-8420 RS-232 Serial Interface Module Card 185447C-01

National Instruments PXI-2599 Dual SPDT 26.5GHz PXI RF Relay Module, 193274D-01L

NATIONAL INSTRUMENTS NI PXI-8360 MXI-Express Interface Card AS IS

(NEW) National Instruments PXI-8420 RS-232 Serial Interface Module Card

*USA * National Instruments NI PXI-8252 IEEE-1394 Firewire Interface Module

NI PXI-2564 Relay Switch Module 191950D-01L – Tested, US Seller