3x 1137 / 30D1-18400
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Product Description
Pack of 3x DB9 F/F Null Modem Adapter
This is RS-232 DB 9 pin miniature null modem with female connectors on each side.
Null modems are used to connect two computers or other devices together to achieve file transfer.
Null modem connectors are different from straight through connectors because the receive and transmit conductors are crossed.
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