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1 4-pin power connector
16 Front USB connector 1 (for connecting USB port 1 and 2
on the front bezel)
2 Microprocessor fan connector
17 Battery
3 Memory slot 1 (DIMM1) 18 Front USB connector 2 (for connecting additional USB
devices)
4 Memory slot 2 (DIMM2) 19 Serial (COM2) connector
5 Memory slot 3 (DIMM3)
20 Internal speaker connector
6 Memory slot 4 (DIMM4) 21 Front audio connector (for connecting the microphone and
headphone connectors on the front bezel)
7 Thermal sensor connector
22 PCI card slots (2)
8 4-pin power connectors (2)
23 DisplayPort connector
9 14-pin power connector
24 PCI Express x1 card slot
10 SATA connectors 1 and 2 (SATA 3.0
connectors)
25 PCI Express x16 graphics card slot
11 eSATA connector
26 Rear fan connector
12 SATA connectors 3 and 4 (SATA 2.0
connectors)
27 Cover presence switch connector (Intrusion switch connector)
13 Front fan connector
28 Microprocessor
14 Front panel connector (for connecting the
power switch and LED indicators)
29 PS/2 keyboard and mouse connector
15 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
Chapter 1. Product overview 13