ASROCK B550D4M User Manual page 19

LAN Port LED Indications
****There are two LED next to the LAN port. Please refer to the table below for the LAN
port LED indications.
LAN Port LED Indications
Activity / Link LED
Status Description
Off No Link
Blinking Orange Data Activity
On Link
ACT/LINK LED
SPEED LED
LAN Port
Speed LED
Status
Off
Yellow
Green
B550D4M
Description
10Mbps connection or
no link
100Mbps connection
1Gbps connection
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