Specifications

System board connections – model 490
Refer to the following illustration and table to identify the system board connectors for your model.
No. System Board Connector System Board Label Color Component
1 PCI Express x1 X1PCIEXP3 black Expansion Card
2 PCI Express x1 X1PCIEXP2 black Expansion Card
3 PCI Express x1 X1PCIEXP1 black Expansion Card
4 PCI Express x16 X16PCIEXP black Expansion Card
5 DisplayPort DISPLAY white DisplayPort Expansion Card
6 Serial Port COMB black Optional Second Serial Port
7 DIMM4 (Channel A) DIMM4 white Memory Module
8 DIMM3 (Channel A) DIMM3 black Memory Module
9 DIMM2 (Channel B) DIMM2 white Memory Module
10 DIMM1 (Channel B) DIMM1 black Memory Module
11 SATA 3.0 SATA4 light blue Any SATA Device other than the
Primary Hard Drive
12 SATA 3.0 SATA5 light blue Any SATA Device other than the
Primary Hard Drive
13 SATA 3.0 SATA0 dark blue Primary Hard Drive
14 SATA 3.0 SATA1 light blue Any SATA Device other than the
Primary Hard Drive
15 Parallel Port PAR black Optional Parallel Port
16 USB 3.0 MEDIA 3.0 black USB 3.0 Device, such as a Media
Card Reader
56 Chapter 5 Removal and replacement procedures: Microtower