This item is in good condition and has been tested working. Please refer to the stock photo to insure the item will work for your application. This item is Dell part number X8129 (or a compatible part number).

   * Dimension: 3100, 5100, 5150, E310, E510, E520, E521
   * Optiplex: GX320, GX650
   * 1 - 24-Pin ATX Motherboard Power (P1)
   * 1 - 4-Pin P4 Motherboard Power (P2)
   * 2 - 4-Pin SATA Power Connection (P3, P5)
   * 1 - 6-Pin Dell Proprietary Power (P4)
   * 2 - 4-pin Molex Power Connectors (P8, P9)
   * 1 - 4-pin floppy connector (P7)
   * 305 Watt Power Supply
   * Tested good working
   * Grade - B
   * Dell Model Number: N305N-00
   * Dell Part Number: X8129 (or a compatible part number)