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1-25FT Serial RS-232 DB25 25-Pin Male to DB9 9-Pin Female AT Modem Molded CableNewAVAILABLEIN STOCKContact UsNewsletterBuy NowProduct Description
AT Modem DB9 Female to DB25 Male Molded Cable
Available lengths: 1' Feet / 3' Feet / 6' Feet / 10' Feet / 25' Feet
This cable features a female DE-9 (DB-9) socket on one end and a male DB-25 plug on the other.
While legacy PCs (post IBM PC/AT) typically use 9-pin RS-232 plugs, external modems are usually equipped with 25-pin RS-232 sockets.
The connector heads are molded onto the cable and each includes a pair of thumbscrews to secure the connector to the PC or modem.
The 9 pins of the DE-9 connector are wired to 9 of the pins on the DB-25 connector as shown in the following table:
DE-9 (DB-9)DB-25Function18Data Carrier Detect (DCD)23Receive Data (RD or Rx)32Transmit Data (TD or Tx)420Data Terminal Ready (DTR)57Signal Ground (SGND or Gnd)66Data Set Read (DSR)74Request To Send (RTS)85Clear To Send (CTS)922Ring Indicator (RI)
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