Genuine Dell N826N Motherboard Mainboard Systemboard for the Inspiron 545 And 545s Systems, Compatible Dell Part Number: DG33M06, T287N, W246R, CN-0T287N, DG33M05 Chipset: Intel G33 Express, Supported Processors: Socket 775, Intel Core 2 Duo, Intel Pentium D Supported Memory: 4 - 800 MHz DDR2 SDRAM, 4GB Max Total (x86 Operating System), 8GB Max Total (x64 Operating System), Audio: Integrated 7.1 Channel Realtek HD Audio Video: Intel Integrated GMA 3100, Expansion Capabilities: 2-PCI Slots, 1- PCI Express x16 Slot, 1- PCI Express x1 Slot Peripheral Intefaces: 1 - VGA Port, 1 - RJ45 10/100 Ethernet Lan Port, 4 - Back Panel USB 2.0 compliant Ports, 6 - Connectors for line-in, line-out, and microphone; two front-panel connectors for headphones and microphone Motherboard Part Number: N826N, DG33M06, T287N, W246R, CN-0T287N, DG33M05