Genuine Dell T553C 305w Watt Power Supply PSU For Optiplex 330, 740, 740e, 740 MLK, 745, 745e, 755 Computer Systems Dell Part Numbers: T553C, GK929, P670F, HK595 Guaranteed Dell Genuine Part Number: GK929 / Model Number: F305E-00, N305E-00, H305E-00 Type: Power Supply / Output: 305W Compatible Model: Dell Optiplex 330, 740, 740e, 740 MLK, 745, 745e, 755 Small Mini Tower Computer Systems. **Ship within 24 hours except holidays and weekends**