TYAN THUNDER LE-T User Manual page 12

2.5 LAN1 and LAN2 Activity LEDs Headers (J62)
With these headers, the activity of the two LAN ports can be viewed from external LEDs.
Yellow = Activity
Green = Link + 10 Base
Orange = Link + 100 Base
NIC1
NIC2
12
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J62
NIC2 NIC1
ACT. ACT.
LED LED
4 3 2 1