Genuine Dell KW626, HR330, TY565 MotherBoard For Dell Optiplex 745 SMT Summary of Supported Features: CHIPSET: Intel Q965 Express. SUPPORTED PROCESSORS: Intel Pentium 4, Pentium D, Celeron, Core, Socket 775. SUPPORTED MEMORY: 4 DIMM slots supporting up to 8 GB RAM. VIDEO: Integrated onboard video. AUDIO: Integrated Audio Sound Controller, ADI 1983 High Definition Audio. PERIPHERAL INTERFACES: (8) 2.0 USB (front and back), (1) parallel printer port, (1) serial ports, 4 - Serial ATA (SATA) Interface Ports, 1- 10/100/1000 Ethernet Port. EXPANSION CAPABILITY: 1 PCI-E X16 slot, supports x16, x8, x4, and x1 modes/cards, 1 PCI-E x1 slot, 2 PCI 32Bit / 33MHz slots, 1 FDD connector. MOTHERBOARD PART NUMBERS: TY565, HR330, KW626.