Installation Manual
H3C S7500E Series Ethernet Switches
Chapter 1 Product Overview
1-4
(1) Power modules
(2) SRPUs (in slot 0)
(3) Fan tray
(4) LPUs (in slot 1 and slot 2)
(5) Jack for ESD-preventive wrist strap
Figure 1-3
Front panel of the S7503E-S
All modules of the S7503E-S are hot swappable.
z
The S7503E-S has three horizontal slots. SRPUs are inserted into the upper slot.
See callout (2) in Figure 1-3. Dedicated S7503E-S SRPUs are required. Different
LPUs are inserted into the other two slots. See callout (4) in Figure 1-3.
z
The fan tray is installed on the right side of the chassis. See callout (3) in Figure
1-3.
z
The two power modules, which sit in the upper part of the chassis provide 1+1
redundancy backup. See callout (1) in Figure 1-3. You can select either AC power
supply or DC power supply.
Figure 1-4 shows the rear panel of the S7503E-S.
(1) COM port for monitoring PoE (RS485)
(2) COM port for monitoring PoE (RS232)
(3) Grounding screws
(4) RTN terminal (+) of external PoE power
supply
(5) Negative terminal (–) of external PoE
power supply (–46 V to –55 V)
Figure 1-4
Rear panel of the S7503E-S