System Bios; Power Supply - Acer Aspire X3990 Service Manual

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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

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