1-6
10/100/1000Base-T Ethernet ports and the four SFP ports comprise four Combo ports, with one port of
a Combo port working at a time.
Figure 1-7 Front panel of the S5120-52C-PWR-EI Ethernet switch
(1) 10/100/1000 Base-T auto-sensing Ethernet port
(2) 10/100/1000 Base-T auto-sensing Ethernet port status LED
(3) Console port (4) Seven-segment LED
(5) Port mode LED (Mode) (6) System status LED (PWR)
(7) RPS status LED (RPS) (8) Interface module 1 status LED (MOD1)
(9) Interface module 2 status LED (MOD2) (10) Port status LED mode switching button
(11) 1000 Base-X SFP port (12) 1000Base-X SFP port status LED
Rear Panel
Figure 1-8 Rear panel of the S5120-52C-PWR-EI Ethernet switch
(1) RPS power input (2) AC power input
(3) Grounding screw (4) Interface module slot 1 (MOD1)
(5) Interface module slot 2 (MOD2)
The S5120-52C-PWR-EI provides two interface module slots on its rear panel. Each slot is installed
with a filler panel when the switch is shipped. You can select one or two interface modules for your
switch as needed. See
Optional Interface Modules on page 1-15 for the interface module models
supported by the S5120-EI series, and see
Installing an Interface Module on page 3-17 for the
installation of interface modules.
S5120-24P-EI
Front Panel
The S5120-24P-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
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