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Chapter 1: Introducing the AT-2973SX, AT-2973T, AT-2973T/4, and AT-VNC10S Adapters
22
AT-2973T/4
Adapter
The AT-2973T/4 adapter, shown in Figure 5 on page 22, is a PCI-Express
adapter. It has four twisted-pair ports, with speeds of 10, 100, or 1000
Mbps in either full-duplex and half-duplex mode. The card has eight LEDs.
Figure 5. AT-2973T/4 Adapter
AT-2973T/4 Adapter Physical Description
The faceplate on the AT-2973T/4 adapter provides four twisted-pair
connectors for attaching the adapter to a compatible link partner. The
ports numbers are not shown on the card. See
Figure 6 on page 23 for the
port numbers and the LED assignments. When the adapter is mounted
vertically, the top LED is the Link LED and the bottom LED is the activity
(ACT) LED.
Table 3. AT-2973T Network Link and Activity LEDs
Port LED ED State Network State
L/A
Off No link (cable disconnected)
Steady On Link
Blinking Network activity
1861
T
LNK
ACT
ATI