Hardware reference guide
Table Of Contents
- Product Features
- Microtower (MT) Hardware Upgrades
- Serviceability Features
- Warnings and Cautions
- Removing the Computer Access Panel
- Replacing the Computer Access Panel
- Removing the Front Bezel
- Removing Bezel Blanks
- Replacing the Front Bezel
- System Board Connections
- Installing Additional Memory
- Removing or Installing an Expansion Card
- Drive Positions
- Installing and Removing Drives
- Installing a Security Lock
- Small Form Factor (SFF) Hardware Upgrades
- Serviceability Features
- Warnings and Cautions
- Removing the Computer Access Panel
- Replacing the Computer Access Panel
- Removing the Front Bezel
- Removing Bezel Blanks
- Replacing the Front Bezel
- Changing from Desktop to Tower Configuration
- System Board Connections
- Installing Additional Memory
- Removing or Installing an Expansion Card
- Drive Positions
- Installing and Removing Drives
- Installing a Security Lock
- Battery Replacement
- Removing and Replacing a Removable 3.5-inch SATA Hard Drive
- Unlocking the Smart Cover Lock
- Electrostatic Discharge
- Computer Operating Guidelines, Routine Care and Shipping Preparation
- Index

System Board Connections
Refer to the following illustration and table to identify the system board connectors for your model.
Figure 3-7 System Board Connections
Table 3-1 System Board Connections
No. System Board Connector System Board Label Color Component
1 DIMM4 (Channel A) DIMM4 white Memory Module
2 DIMM3 (Channel A) DIMM3 black Memory Module
3 DIMM2 (Channel B) DIMM2 white Memory Module
4 DIMM1 (Channel B) DIMM1 black Memory Module
5 Power SATAPWR1 black (unused)
6 Power SATAPWR1 black SATA Optical and Hard Drives
7 SATA 3.0 SATA0 dark blue 1st Hard Drive
8 SATA 2.0 SATA1 white 2nd Hard Drive, or 2nd Optical Drive
if an eSATA Adapter Cable exists
9 SATA 2.0 SATA2 white 1st Optical Drive
10 eSATA ESATA black eSATA Adapter Cable, or 2nd
Optical Drive
11 Parallel Port PAR black Parallel Port
12 Serial Port COMB black Serial Port
13 USB MEDIA black USB Device, such as a Media Card
Reader
14 Hood Lock HLCK black Hood Lock
15 USB MEDIA2 black USB Device, such as a Media Card
Reader
16 Hood Sensor HSENSE white Hood Sensor
17 PCI Express x1 X1PCIEXP1 black Expansion Card
50 Chapter 3 Small Form Factor (SFF) Hardware Upgrades