HWIC-2FE V01 not detected on Cisco 2800 router

I have a Cisco 2811 router. The IOS is C2800-NM-AdvancedEnterpriseK9-M ver 12.4(22)YB8. I shut the router down and installed an HWIC-1T ethernet port card and restarted the router. The router does not recognize the HWIC, no additional interfaces show up in the config. When the router restarts, the LEDs adjacent to the two ehternet ports on the HWIC light up and stay green even when nothing is plugged into the ports.

I read the data sheet for the hwic and it says that you need as a minimum 12.4(20)T or better for the software release and IP BASE as the software package.

What else do I need to do to get the Cisco 2811 to recognize the card?

Your current YB version may be older than the requested 12.4(20)T so I would also recommend loading this version (or the latest 12.4T version) and seeing if your card gets recognized.

In addition, could you perhaps post the WS-X45-SUP7L-E  output of the show diag output?