Acer Aspire X3990 Acer Aspire X3990 Desktop Service Guide - Page 85

Label, Description, Serial ATA 3.0Gb/s

Page 85 highlights

No Label Description No Label Description 1 CPU LGA1155 socket for 11 Intel® Sandy Bridge processor family F_PANEL Front panel switch/ LED header 2 SYS_FAN System cooling fan 12 CLR_CMOS Clear CMOS jumper connector 3 CPU_FAN CPU cooling fan connector 13 BZ1 Buzzer 4 DIMM1~2 240-Pin DDR3 14 ME_DISABLE ME Disable Header SDRAM slots(Channel A: DIMM2 Channel B: DIMM1) 5 GPIO1 General Purpose I/O 15 Signal 1 SPDIF_OUT SPDIF out header 6 GPIO2 General Purpose I/O 16 Signal 2 F_AUDIO Front panel audio header 7 ATX_POWER Standard 24-pin ATX 17 PCIE 16X PCI Express x16 slot power connector 8 F_USB3 Front panel USB 18 header (card reader) PCIE1X_1 PCI Express x1 slot 9 F_USB2 Front panel USB headers 19 ATX_12V Auxiliary 4-pin power connector 10 SATA1~2 Serial ATA 3.0Gb/s connectors (Black color) 77 Chapter 5

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