Asus P5Q SE Plus Socket 775 motherboard. DIMM Slots: 4 × DDR2 (non-ECC, unbuffered). Supported Speeds: DDR2‑1200 (OC) / 1066 / 800 / 667 MHz. 3 × PCI legacy slots. Expansion Slots 1× PCIe 2.0 ×16, 2× PCIe ×1, 3× PCI.
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