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3ft (0.9m) Serial RS232 DB9 Null Modem Cable with Low Profile Connectors M/M - In-Wall CMG-Rated | Serial RS232 | Computer Cables | USB and PC
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StarTech.com DB9 RS232 Serial Null Modem Adapter - F/F - Cost-effective way of converting a straight through cable into a null modem cable - Reliable Paper