Desc: APC UPS cable - for Back-UPS RS 500 File: apc-rs500-serial.txt Date: 14 July 2004 Auth: Russell Kroll , Martin Edlman This document was constructed from a mail from Martin. He figured out the pinouts to make the Back-UPS RS 500 work with a normal serial port. Here are the details: --- UPS side PC side RJ45 (8 pins) DB9F 1 orange/white 2,8,9 2 orange 1 3 green/white chassis/ground 4 blue - 5 blue/white - 6 green 5 7 brown/white 4,6 8 brown - +---+ +-----+ +-----+ | | +---------------+ 8 7 6 5 4 3 2 1 view from back (cable entry) --- Note this results in OL=-CTS, LB=DCD, SD=ST, CP=RTS, so it should work with the existing genericups type 20.