Amazon.com: Tripp Lite Null Modem Serial RS232 Cable (DB9 to DB25 F/M) 6-ft. (P456-006) : Electronics
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Delock Products 86604 Delock Serial Cable RS-232 D-Sub9 female to female null modem with narrow plug housing 10 m
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Delock Products 87472 Delock Serial Cable RS-232 D-Sub 9 female to female null modem with narrow plug housing - Full Handshaking - 2 m
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RS232 Connector Pin Assignment RS232 Cable Information DB 9 and DB 25 Connection
