System board components
| Item | Description |
|---|---|
| 1 | System fan connector |
| 2 | Internal USB 2.0 connector |
| 3 | Front LEDs and power button module connector |
| 4 | Processor |
| 5 | 24-pin power supply connector |
| 6 | SATA connector 1 |
| 7 | SATA connector 2 |
| 8 | SATA connector 3 |
| 9 | SATA 6 and optical drive shared connector |
| 10 | Front USB connector |
| 11 | SATA connector 4 |
| 12 | SATA connector 5 |
| 13 | Processor fan connector |
| 14 | Ambient temperature sensor connector |
| 15 | TPM connector |
| 16 | System battery |
| 17 | Slot 4, PCIe3 x4 (4,1)* |
| 18 | Slot 3, PCIe3 x4 (4,1)* |
| 19 | Slot 2, PCIe3 x16 (16,8,4,1)* |
| 20 | Slot 1, PCIe3 x8 (8,4,1)* |
| 21 | 4-pin power connector |
| 22 | DIMM slots |
For more information on the expansion slot specifications, see PCIe expansion slot definitions