Specifications

Hardware Reference 17

C613-03080-00 REV G

For 1000BASE-T RJ-45 cables, all four pairs are used and the cable is wired in a

straight-through configuration. The following table lists the pin assignments.

Caution Do not plug a phone jack into any RJ-45 port. Doing so could damage

the switch. Use only twisted pair cables with RJ-45 connectors.

Redundant Power Supply (RPS)

AT-8600 Series switches have a Redundant Power Supply (RPS) connector on

their rear panel. The RPS connector differs for different switch models.

For information about the RPS for AT-8624T/2M and AT-8648T/2SP switches,

Figure 5 illustrates the pin layout to the 16-pin molex connector and RPS port.

Table 1 lists the connector’s pin numbers and pin functions.

For information about the RPS for the AT-8624PoE switch, Table 2 on page 18

lists the connector’s pin numbers and pin functions.

Figure 5: RPS 16-pin molex connector pin layout for AT-8624T/2M and AT-8648T/2SP

End 1 End 2

1 Pair 1+ 1 Pair 1+

2 Pair 1- 2 Pair 1-

3 Pair 2+ 3 Pair 2+

6 Pair 2- 6 Pair 2-

4 Pair 3+ 4 Pair 3+

5 Pair 3- 5 Pair 3-

7 Pair 4+ 7 Pair 4+

8 Pair 4- 8 Pair 4-

Table 1: RPS connector pin numbers and functions for AT-8624T/2M and AT-8648T/2SP

Pin Number Function

1 +12 VDC

2 Remote Sense (RS) +5 VDC

3 Remote Sense (RS) Ground

4 Remote Sense (RS) +3.3 VDC

5 Redundant Power Supply (RPS) Present

6 Ground (+3.3 VDC Return)

7 Ground (+5 VDC Return)

8+5 VDC

9 Ground (+12 VDC Return)

10 +3.3 VDC