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18 CHAPTER 1: INTRODUCING THE 3COM SWITCH 4050 AND 4060
* The PSU LEDs are visible on the front of the Switch and are marked ‘1’ for PSU 1 (bottom) and
‘2’ for PSU 2 (top).
3Com Switch 4050
and 4060
— Rear
View Detail
Figure 3 3Com Switch 4050/4060 — rear view
Expansion Module
Slot
You can use this slot to install an Expansion Module. Contact your
supplier for further information.
WARNING:
When an Expansion Module is not installed, ensure the
blanking plate is fitted by tightening all screws with a suitable tool.
Replaceable Power
Supplies (PSUs)
The 3Com Switch 4050 and 4060 has a bay for two internal power
supplies. Contact your supplier for further information. For information
on installation and removal, please refer to the documentation that
accompanies the replacement PSU.
The 3Com Switch 4050 and 4060 support the 3Com AC power supply
unit (3C17718).
Temperature
Red flashing The Switch and/or the PSUs are above critical
temperature and may shut down.
Off The Switch and the PSUs are below critical
temperature.
LED Color Indicates