
System Board
System Board Connectors and Jumpers (component location may vary)
| X4PCIEXP | PCIe x16 downshifted to a x4 | PWRCMD | Power connector | 
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| X1PCIEXP2 | PCIe X1 slot | SATA PWR0 | Drive power connector | 
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| X1PCIEXP1 | PCIe X1 slot | PWR | Main power connector | 
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| X16PCIEXP | PCIe X16 slot | FRONT USB 3.0 | Front USB 3.0 ports | 
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| IN//OUT | Audio connectors | MEDIA 3.0 | USB 3.0 device, such as a USB 3.0 media card reader | 
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| USB | USB connectors | SPKR | Speaker connector | 
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| VGA/COMA | Monitor connector/serial port | SATA0 | Primary hard drive | 
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| DISPLAYPORT | DisplayPort connector | SATA1 | Any SATA device other than the primary hard drive | 
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| RJ45/USB | Network/USB connectors | SATA2 | Any SATA device other than the primary hard drive | 
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| PS2 | PS/2 keyboard/mouse connectors | SATA3 | Any SATA device other than the primary hard drive | 
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| COMB | Serial port | SATA5 | Any SATA device other than the primary hard drive | 
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| PAR | Parallel port connector | EXT | System board PCI extender | 
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| CHFAN2 | System fan connector | MEDIA | Media card reader connector | 
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| XBT | RTC battery socket | FRONT_USB | 1st USB connector | 
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| XU1 | Processor socket | PSWD | Password header | 
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| CPUFAN | Fan sink connector | CLINK | |
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| DIMM4 | Memory socket - Channel A | CMOS | CMOS header | 
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| DIMM3 | Memory socket - Channel A | HSENSE | Hood sensor connector | 
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| DIMM2 | Memory socket - Channel B | HLOCK | Hood lock connector | 
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| DIMM1 | Memory socket - Channel B | FRNT AUD | Front panel connector | 
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| PB/LED | Power switch connector | PWRCMD | Power connector | 
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| HP EliteDesk 800 G1, Tower | page 4 |