Acer Aspire X3990 Acer Aspire X3990 Desktop Service Guide - Page 11

Rear I/O connectors • 1 * PS2 KB+MS • 1 * VGA connector • 1 * HDMI • 1 * RJ45 + Dual USB2.0 • 1 * Qual USB2.0 connector (4 ports) • 1 * 3 ports Audio jack On-board connectors • 1 * ILM for LGA 1155 CPU. • 1 * 24-pin ATX PWR connector. • 1 * H2X4 Power Supply Connector. • 2* DDR3 DIMM Socket. • 2 * SATA 2.0. • 4 * USB2.0 H5X2 Header (support 8 ports). • 1 * Front Audio Pannel H5X2 header. • 1 * Front Panel IO H7X2 Header for Acer pin define. • 1 * H1X4 CPU with SAMRT FAN controller. • 1 * H1X4 System with SAMRT FAN controller. • 1 * H1X4 SPDIFOUT Header for Acer pin define. • 1 * H3X1 Clear CMOS Header (with jumper). • 1 * onboard Buzzer. • 2 * H1X2 GPIO header. • 1 * 3pin ME enable / disable connector ( Jumper). System BIOS • Type: Use SPI Flash • Size: 32Mb • Kernel: AMI Kernel with Acer skin Power supply • Non PFC 220W / PFC 220W • FR 220W. • Support models are listed on AVLC. Chapter 1 3