LGA 775 (Supports Intel Pentium 4, Pentium D, and early Core 2 Duo) ATI Radeon Xpress 1100 (RC410/RC415) Memory 2x DDR2 DIMM slots (up to 2GB total, DDR2-533/667) Expansion 1x PCI Express x16, 1x PCIe x1, 2x PCI slots Storage 4x SATA I (1.5Gb/s) ports, 1x IDE (Ultra DMA 100/66) Form Factor Micro-ATX (approx. 24.4cm x 24.4cm) 2. Rear I/O Panel & Internal Headers
motherboard is a legacy Micro ATX board often found in OEM systems like the Acer Power F6 rc415tam motherboard manual