I have a 6ft DB9F/DB9M cable that I'm trying to identify. On one connector it says:
CPU
SM-SER-02A
Rev. 1
The pinout is:
2-2
3-3
5-5
The rest don't connect to anything.
Anyone have any idea what this might be for?
Thanks,
Sam
I think it's a simple Serial cable with no flow control: just TX, RX and GND pins are used.
It's a straight cable (TX-TX, RX-RX) so it could be used to connect a computer to a simple peripheral (modem-like).
Yeah, sounds like a "null modem cable"
Thats a very basic serial cable, not a null modem cable. It's good for low speeds, as it doesn't provide hardware flow control (rts/cts) but can be used with software flow (xon/xoff)