1-2
Item
S5120-28C-EI
S5120-24P-EI
S5120-52C-EI
S5120-48P-EI
S5120-28C-
PWR-EI
S5120-52C-PWR-EI
AC input
Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz
Use the external RPS power supply units recommended by H3C only.
Input
voltage
RPS
input
Rated voltage range: 10.8 VDC to
13.2 VDC
RPS500-A3 (+12 V/10.5 A output,
power cable 0404A03C)
Rated voltage range: –52 VDC to –55
VDC
RPS1000-A3 (–54 V/25 A output,
power cable 0404A053)
Static power
consumption
S5120-28C-EI: 36
W
S5120-24P-EI: 35
W
S5120-52C-EI:
55 W
S5120-48P-EI:
54 W
55 W
78 W
Power
consumption (full
load)
S5120-28C-EI:
103W
S5120-24P-EI:
62W
S5120-52C-EI:
145W
S5120-48P-EI:
110W
495 W, with
125 W of
system power
consumption
and 370 W of
PoE power
550 W when RPS is
not connected, with
180 W of system
power consumption
and 370 W of PoE
power
920 W when RPS is
connected, with 180
W of system power
consumption and
740 W of PoE power
Cooling system
Four fans for heat dissipation
Six fans for heat dissipation
Operating
temperature
0°C to 45°C (32°F to 113°F)
Relative humidity
(noncondensing)
10% to 90%
* indicates that you can select AC power input, RPS power input, or both (with the AC power input
and the RPS power input work as backup for each other).
z
Only the recommended RPS can be used for S5120-EI Ethernet switches. The –48 VDC in the
equipment room cannot be used directly. Otherwise, the device may be damaged.
z
For details about the RPS power supply units, see the user manual and
RPS Ordering Guide for
H3C Low-End Series Ethernet Switches
.
Introduction to S5120-EI Series Ethernet Switches
S5120-28C-EI
Front Panel
The S5120-28C-EI Ethernet switch provides 24 × 10/100/1000Base-T auto-sensing Ethernet ports, four
1000 Base-X SFP ports and one console port on the front panel. The last four 10/100/1000Base-T
