Genuine Dell TP412 Motherboard Mainboard For Precision Workstation T3400 Mini-Tower (SMT) Systems Chipset: Intel X38 Express Chipset/ ICH9R, Supported Processors: Intel Core 2 Quad, Intel Core 2 Duo, Intel Core 2 Extreme, Socket LGA755 Supported Memory: 4x 667-MHz ECC and non-ECC and 800-MHz ECC DDR2 SDRAM, 8 GB Max Total (64-Bit Operating System), 4 GB Max Total (32-Bit Operating System), Audio: Audio Line-in/Line-out only Video: No Integrated Video, Expansion Capabilities: 3x, PCI Slots, 1xPCI-E x8 Slot, 2x PCI-E x16 Slot Peripheral Interfaces: 1x Serial Port, 1x Parallel Port, 1x RJ45 Ethernet/LAN Port, 8x USB Ports (six back-panel and two front panel USB 2.0-compliant connectors), 4x Audio Ports (two rear connectors for line-in and line-out; two front-panel connectors for headphones and microphone), 2x PS/2 Mouse/Keyboard Ports Motherboard Part Number: HY553