75
NOTE:
• As a best practice, use H3C transceiver modules and cables for the switch.
• You can use a QSFP-40G-SR4-MM850 or QSFP-40G-CSR4-MM850 transceiver module to
connect a QSFP+ port to four SFP+ ports. The QSFP+ transceiver module and SFP+ transceive
modules to be connected must be the same in specifications, including central wavelength and
fiber type.
• The H3C transceiver modules and cables are subject to change over time. For the most recent
list of H3C transceiver modules and cables, contact your H3C Support or marketing staff.
• For more information about H3C transceiver modules and cables, see H3C Transceiver Modules
User Guide.
Combo interface
The S5560X-30C-EI and S5560X-30F-EI switches each provide eight combo interfaces. The
S5560X-34S-EI switch provides four combo interfaces. A combo interface contains an SFP port and
a 10/100/1000BASE-T autosensing Ethernet port. Only one of these two ports can operate at a time.
LEDs
System status LED
The system status LED shows the operating state of the switch.
Table 33 System status LED description
LED mark Status Description
SYS
Steady green The switch is operating correctly.
Flashing green (1 Hz) The switch is performing power-on self test (POST).
Steady red The switch has failed the POST or is faulty.
Off The switch is powered off.
Power module status LED
The S5560X-EI switches except the S5560X-34S-EI and S5560X-54S-EI each provide two power
module slots at the rear. For each power module, the switch provides a power module status LED on
the front panel.
Table 34 Power module status LED description
LED mark Status Description
PWR1/PWR1
Steady green
A power module is installed in the power module slot, and the power
module is outputting power correctly.
Steady yellow
A power module is installed in the power module slot, but the power
module has failed or no power is input to the power module.
Off No power module is installed in the power module slot.
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