3Com 3C17700 - SuperStack 3 Switch 4900 Getting Started Manual - page 18
Manual is about: Getting Started Guide
of
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18
C
HAPTER
1: I
NTRODUCING
THE
S
UPER
S
TACK
3 S
WITCH
4900 F
AMILY
Switch — Rear
View Detail
Figure 5 Switch 4900 — rear view
Figure 6 Switch 4900 SX — rear view
Green flashing
The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
Yellow
The Switch has failed its Power On Self Test.
Off
The Switch is not receiving power.
Layer 3 LED
Green
The Switch software supports Layer 3.
Off
The Switch software does not support Layer 3.
LED
Color
Indicates