Your packing slip listed-> 250 Watt power supply = OUCH.
The link you posted:
Additional Information
HDTV support
System Requirements 128MB of system memory
CD or DVD-ROM drive
35MB available hard disk drive space (50MB for full installation)
A 350 watt power supply.
A vacant AGP 2.0 slot or better
An available hard disk drive power dongle (smaller floppy disk drive connector is not sufficient)