System board callouts
Sys Bd Label | Sys Bd | Color | Component | Sys Bd Label | Sys Bd | Color | Component |
| Connector |
|
|
| Connector |
|
|
|
|
|
|
|
|
|
|
CHFAN2 | Chassis fan | Red | Fan | SPKR | Speaker | White | Speaker |
| connector |
|
|
| connector |
|
|
|
|
|
|
|
|
|
|
HSENSE | Hood sensor | White | Hood sensor | FRONT USB | Front I/O | Yellow | Front I/O |
| connector |
|
|
| connector |
|
|
|
|
|
|
|
|
|
|
PWRCPU | Processor | White | CMOS | CMOS button | Yellow | Reset CMOS | |
| power |
| power |
|
|
|
|
| connector |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
XU1 | Processor | Green | Processor | BAT | Battery | Black | RTC battery |
|
|
| (soldered on) |
| socket |
|
|
|
|
|
|
|
|
|
|
CPUFAN | Processor fan | White | Processor fan | FRONT AUD | Front I/O | Blue | Front I/O |
| connector |
|
|
| connector |
|
|
|
|
|
|
|
|
|
|
DIMM4 | DIMM4 | White | Memory module | X4PCIEXP | PCI Express | Black | Expansion card |
| (Channel A) |
|
|
| x16 |
|
|
|
|
|
|
| downshifted |
|
|
|
|
|
|
| to x4 |
|
|
|
|
|
|
|
|
|
|
DIMM3 | DIMM3 | Black | Memory module | X1PCIEXP2 | PCI Express x1 | Black | Expansion card |
| (Channel A) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
70 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis