Allied Telesis AT-RPS1000 - Manual (Page 6)

AT-RPS1000 Installation
4
Redundant Power
Supply Ports
The AT-RPS1000 has two AT-RPS1000 ports. Each port connects to a
different gigabit switch.
Figure 3 shows the rear view of a rack that has one gigabit switch
mounted above the AT-RPS1000 and one gigabit switch mounted below
AT-RPS1000. The upper switch is cabled to the upper AT-RPS1000 port;
the lower switch is cabled to the lower AT-RPS1000 port.
Figure 3: Gigabit Switches connected to a AT-RPS1000
Note that the upper power socket on the AT-RPS1000 provides the AC
source for backup power for the upper switch; the lower power socket
provides the AC source for backup power for the lower switch.