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1-3
Throughout this chapter, the dual power supply inputs for an S7500E series switch must be the same in
voltage and frequency.
Figure 1-2 shows the rear panel of the S7502E.
Figure 1-2
Rear panel of the S7502E
(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)
There are two DC power input (PoE power supply input) terminals and two COM ports (monitor ports)
on the rear panel of the chassis.
z
The S7500E series except the S7506E-S are Power over Ethernet (PoE) capable, that is, they can
supply power to devices such as IP phones, wireless access points, and network cameras
connected to their Ethernet ports through twisted pair cables.
z
For the S7502E and S7503E-S, the external PoE power supply is connected to the PoE power
supply input terminals on the rear panel, while for the other models of the S7500E series, the
external PoE power supply is connected to a power module. For details, refer to section
“PSR1400-D” on page 1-15, section“PSR2800-ACV” on page 1-16 and section PSR6000-ACV on
page 1-17.
S7503E-S
Figure 1-3 shows the front panel of the S7503E-S.