GigaByte M55S-S3 NF550/ddr2/PCI-E/GLan s.AM2

( GIGABYTE )

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Processor	Socket AM2 for AMD Athlon™ 64 FX / Athlon™ 64 X2 Dual-Core / Athlon™ 64 / Sempron™ processor
Chipset	NVIDIA^® nForce 550 Super I/O: ITE IT8716 chip Integrated Peripherals: T.I IEEE1394 controller Marvel 88E1116 Gigabit Ethernet Controller Realtek ALC883 Audio Codec
Memory	4 DDR2 DIMM memory slots (supports up to 16GB memory)(Note 1) Supports dual channel DDR2 800/667/533/400 DIMMs Supports 1.8V DDR2 DIMMs Support ECC Memory (Note 1) Due to the limitation of Windows 32-bit operating system, when more than 4GB of physical memory is installed, the actual memory available for the operating system will be less than 4GB; Windows 64-bit operating system doesn't have such limitation.
Internal I/O Connectors	1 24-pin ATX power connector 1 4-pin ATX 12V power connector 1 floppy connector 1 IDE connector 4 SATA 3Gb/s connectors 1 CPU fan connector 1 system fan connector 1 power fan connector 1 front panel connector 1 front audio connector 1 CD In connector 1 SPDIF In connector 3 USB 2.0/1.1 connectors for additional 6 USB 2.0/1.1 ports by cables 2 IEEE1394a connectors for additional 2 port by cables 1 Power LED connector 1 Chassis Intrusion connector
Expansion Slots	1 PCI Express x 16 slot 4 PCI Express x 1 slots 2 PCI slots
Rear Panel I/O	1 PS/2 keyboard port 1 PS/2 mouse port 1 parallel port 1 SPDIF out port (coaxial) 1 SPDIF out port (optical) 1 serial port (COMA) 4 USB 2.0/1.1 ports 1 IEEE1394 port 1 RJ-45 port 6 audio jacks (Line In / Line Out / MIC In / Surround Speaker Out (Rear Speaker Out) / Center/Subwoofer Speaker Out / Side Speaker Out)
Power	ATX power connector and ATX 12V connector
Form Factor	ATX form factor; 30.5cm x 23.4cm
H/W Monitoring	System voltage detection System voltage detection CPU temperature detection CPU / Power / System fan speed detection CPU warning temperature CPU fan failure warning Supports CPU Smart Fan function(Note 2) (Note 2) Whether the CPU Smart FAN Control function is supported will depend on the CPU you install.
BIOS	1 4Mbit flash ROM Use of licensed AWARD BIOS PnP 1.0a, DMI 2.0, SM BIOS 2.3, ACPI 1.0b
Other Features	Supports @BIOS Supports Download Center Supports Q-Flash Supports EasyTune (Note 3) Supports Xpress Install Supports Xpress Recovery2 Supports Xpress BIOS Rescue (Note 3) EasyTune functions may vary depending on different motherboards.
Remark	Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors' website or 3rd party website. Due to most hardware/software vendors no longer offer support for Win9X/ME. If some vendors still has Win9X/ME drivers available, we will publish on website.

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