Printronix Network Interface Card - Manual (Page 27)

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Table 6 shows the NET LED states for various network conditions
when no WLAN card is found or present.
Table 5. Wireless NIC 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 NIC 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
Wireless Network Indicator