2x SATA III (6Gb/s) ports and 2x SATA II (3Gb/s) ports. Fan Headers: 1x 4-pin CPU_FAN and 1x 4-pin SYS_FAN. BIOS and Boot Settings To configure the system or install a new OS: Front panel pin installation, help! - Acer Community
LGA 1150 (Supports Intel 4th Gen Haswell Core i3, i5, i7, Pentium, and Celeron). Chipset: Intel H81 Express.
Usually located at the bottom-right corner. Pins 1-2: HDD LED (indicates drive activity). Pins 2-4: Power LED (indicates system power state). Pins 5-7: Reset Switch. Pins 6-8: Power Button. Pin 1: Marked by a white square on the PCB. Power Connectors: 1x 24-pin ATX Main Power. 1x 4-pin ATX 12V CPU Power.
