APC Dumb UPS cable (simple)

pinout

APC Part# 940-0020 (grey cable). Should work with APC PowerChute Plus software.

9 pin D-SUB male connector  to the UPS

UPS Signal Name DB-9 Male (UPS end) DB-9 Female (PC end) PC Signal Name Shutdown 1 4 DTR AC Fail 2 8 CTS Common 4,9 5 GND

9 pin D-SUB female connector  to the computer

Source:www.pinouts.ru