IBM INFOPRINT 6500 - Manual (Page 45)

10/100Base-T
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Table 5 shows the NET LED states for various network conditions
when a WLAN card is inserted into the wireless Ethernet. The
Ethernet (wired) interface will not affect the NET LED while a
WLAN card is present.
Table 6 shows the NET LED states for various network conditions
when no WLAN card is found or present.
Table 5. Wireless Ethernet Interface NET LED States
WLAN Network Condition NET LED
Network-link quality is good Green
Network-link quality is fair Yellow
Network-link quality is bad Red
Network-link not present Off
Network-link present and transmitting Link quality + blink
Table 6. Wireless Ethernet Interface NET LED States
(No WLAN)
Wired Ethernet Network Condition
(No WLAN)
NET LED
Network-link is present Green
Network-link is not present Off
Network-link present and transmitting Blink