Pin D connector | Apple NMB-003 manual

m 9-pin D connector

1 2 3 4 5

6 7 8 9

mPin signals

1:(CD) UPS battery low (20%) <from UPS to Xserve RAID>

2:Not used

3:Not used

4:(DTR) handshake option <from Xserve RAID to UPS>

5:Ground

6:Not used

7:(RTS) reserved

8:(CTS) Line fail—switch to UPS battery <from UPS to Xserve RAID>

9:(RI) reserved

mSerial cable to UPS should be number 940-0020B (or comparable cable) for APC basic signaling

Specifications 85