NI USB-485 | National Instruments | Artisan - Price, Specs
NI USB-232/4 | National Instruments | Artisan - Price, Specs
USB to Serial Port (RS - 232) Adaptor (DB-9) with Cable - BF-812 buy online at Low Price in India - ElectronicsComp.com
USB to Serial RS232 Converter Cable
Solved: What advantage is there in using the NI USB-232/4 over an off-the-shelf USB to Serial hub? - NI Community
Just the driver for USB-RS232?! - NI Community
FTDI Chipsatz Kreuzverdrahtet USB Serial DB9 FT232R USB RS232 Null Modemkabel PC Control TV Kabel (Standard DB9 COM-Port Pinout (PC mit USB auf RS232 Endgerät: Amazon.de: Computer & Zubehör