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StarTech.com 0.5m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable - 50cm (MXT10050CMBK)
USB to Serial D9 RS232 Converter
3ft (1m) DB9 to 3.5mm Serial Cable for Serial Device Configuration, RS232 DB9 Male to 3.5mm Cable Used for Calibrating Projectors, Digital Signage, ...
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RS232 Extension
3m RS232 Serial Null Modem Cable, Crossover Serial Cable w/Al-Mylar Shielding, DB9 Serial COM Port Cable Female to Male, Compatible w/DTE Devices, ...