1x PCIe x16, 2x PCIe x1, 1x PCI, and 1x mini-PCIe (often for Wi-Fi). Storage: 4x SATA II (3Gb/s) ports. 🔍 Crucial User Findings
For a detailed visual walkthrough of the board's layout and connectors, this H-IG41-uATX Overview is a great resource.