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18
C
HAPTER
1: I
NTRODUCING
THE
3C
OM
S
WITCH
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
Summary of Contents for SWITCH 4050
Page 6: ......
Page 60: ...60 CHAPTER 4 PROBLEM SOLVING ...
Page 71: ...B PIN OUTS Null Modem Cable 9 pin to RS 232 25 pin PC AT Serial Cable 9 pin to 9 pin ...
Page 74: ...74 APPENDIX B PIN OUTS ...
Page 86: ......