![](/images/new-backgrounds/1121155/121155137x1.webp)
1 | power supply | 2 | chassis fan |
|
|
|
|
|
|
3 | optical drive | 4 | media card reader (optional) |
|
|
|
|
|
|
5 | I/O panel | 6 |
| |
|
|
|
|
|
` |
|
|
|
|
|
|
|
|
|
System Board Components
Vostro 420
1 | power connector | 2 | processor heat | 3 | memory module connectors (4) |
| (PWR2) |
| sink/fan assembly |
| (DIMM_1, DIMM_2, DIMM_3, |
|
|
| power |
| DIMM_4) |
4 | main power connector | 5 | battery socket | 6 | serial ATA |
| (PWR1) |
|
|
| connector (SATA4) |
|
|
|
|
|
|
7 | serial ATA hard drive | 8 | serial ATA hard drive | 9 | serial ATA hard drive connector |
| connector (SATA3) |
| connector (SATA2) |
| (SATA1) |
|
|
|
|
|
|
10 | serial ATA hard drive | 11 | serial ATA | 12 | front I/O panel connector |
| connector (SATA0) |
| connector (SATA5) |
|
|
|
|
|
|
|
|
13 | serial ATA | 14 | USB1 connector (from | 15 | USB2 connector (from front I/O |
| drive connector |
| front I/O panel) |
| panel) |
| (SATA6) |
|
|
|
|
|
|
|
|
|
|
16 | USB3 system board | 17 | audio connector | 18 | PCI connector (PCI4) |
| connector |
| (F_AUDIO) |
|
|
19 | PCI connector (PCI3) | 20 | PCI connector (PCI2) | 21 | PCI connector (PCI1) |
|
|
|
|
|
|
|
|
|
|
|
|