Справочник Пользователя для IBM EtherLink XL

The 3C905B-TX adapter has three status LEDs, as shown in 
Figure B-1 and described in Table B-1.

Figure B-1   LEDs

DATA

TX

ACT

10

100

L

N

K

RJ-45 port

ACT LED
10 LNK LED
100 LNK LED

Table B-1   LED Descriptions

10 LNK 

Green:
Link integrity

Reversed 
polarity

Good 10BASE-T 
connection between 
adapter and hub

No connection 
between 
adapter 
and hub

100 LNK  Green:

Link integrity

Reversed 
polarity

Good 100BASE-TX 
connection between 
adapter and hub

No connection 
between 
adapter 
and hub

ACT 

Yellow:
Port traffic for
either speed

Network traffic 
present

Heavy network 
traffic

No traffic