Realtek High Definition Audio (8-channel) and Gigabit LAN (up to 1000Mb/s). 2. Essential BIOS & Startup Instructions GA-EP31-DS3L (Rev. 1.0) - GIGABYTE Global

4 x DDR2 DIMM sockets supporting up to 4 GB of system memory.

1 x PCI Express x16 slot for graphics, plus 3 x PCI Express x1 and 3 x PCI slots.

Supports Intel Core 2 Extreme, Quad, Duo, Pentium, and Celeron processors in the LGA 775 package.

Note: Due to chipset limitations, you should not use all four slots with double-sided memory modules, as it may prevent the system from starting.

4 x SATA 3Gb/s connectors and 1 x IDE connector for legacy drives.