The Model Number is ATX0300D5WC and the HP Part Number is 585008-001.
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Connectors:
1 X 24-pin ATX connector
1 X 4-pin ATX12V Connector
2 X SATA connectors
5 X peripheral power connectors
1 X Floppy connector
Dimensions: 5.9 W x 3.4 H x 5.5 D Inches