
A+ SERVER 
Cooling System
The SC813 chassis has an innovative cooling design that features four 
A fan speed control setting in BIOS allows fan speed to be determined by system temperature [the recommended setting is Balanced].
Figure 1-1.  AMD SR5650/SP5100 Chipset:
System Block Diagram
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  | DIMM1A  | 
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  | DIMM1B  | 
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  | DIMM2A  | 
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  | CPU1 | DIMM2B  | 
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  | DIMM3A  | 
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  | DIMM3B  | 
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  | DIMM4A  | 
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  | HT3 Link  | DIMM4B  | 
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  | INTEL  | Slot6 PCIE x8/x16  | |||||||
RJ45  | 82574L  | ||||||||
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  | INTEL  | 
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  | SWITCH  | Slot5 x8  | |||
RJ45  | SR5650 | 
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82574L  | 
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COM1  | 
  | SLOT1  | SLOT2  | SLOT3  | 
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COM2  | RMII  | 
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PCI  | PCI  | PCI  | 
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VGA  | 
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DDR2 SDRAM  | 
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  | PCI  | 
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  | IDE (ATA/133)  | ||
64MB X16  | 
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PSU I2C  | BMC  | 
  | SMBus  | SP5100  | 
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VGA  | 
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IPMB  | 
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  | TPM  | 
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  | FE PHY  | 
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  | SPI Flash  | 
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  | RTL8201N  | 
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  | W83527HG  | 
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HWM  | 
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W83795G  | 
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Note: This is a general block diagram. Please see Chapter 5 for details.