The DOM used in the SS4200-E is a PQI 256MB 40 pin DOM (part number DJ0256M22RI0). It uses a standard 40 pin IDE connector. I don't know if IDE to USB will work, never done that before, so you'll have to figure that out. The DOM does fit into a standard motherboard 40 pin IDE connector. Motherboard male, DOM female connectors.
There is a power cable for the DOM used in the SS4200-E. I don't know if the Molex one you show has the correct DOM connector. The DOM power connector is keyed to provide correct polarity when connected to the DOM.