Acer GT7700-UQ9550A User Manual - Page 35
Serial ATA connector: SATA1~4, Fan power connectors
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English 23 Serial ATA connector: SATA1~4 The six serial ATA connectors (SATA1-4) is a high-speed Serial ATA interface port. Each connector can connect to one Serial ATA device. Important: Please do not fold the Serial ATA cable into 90-degree angle. Otherwise, data loss may occur during transmission. Fan power connectors The fan power connectors (CPUFAN and SYSFAN1-2) support system cooling fan with +12V. When connecting the wire to the connectors, always note that the red wire is the positive and should be connected to the +12V; the black wire is ground and should be connected to GND. Important: CPUFAN supports fan control. You can install Dual Core Center utility that will automatically control the these fan speed according to the actual CPU and system temperature. Fan/heat sink with 3 or 4 pins are both available for CPUFAN.