20Clear CMOS (Complementary Metal Oxide Semiconductor) / Recovery jumper
21SATA port 4
22SATA port 3
23Media card reader connector
24Front panel connector
25Front USB connector
26Hard disk drive enablement module connector
27Auxiliary LED connector
28Internal USB 2.0 port
48
49
50
51
52
53
54
55
56
PCI Express x16 card slot
PCI Express x4 card slot (x16 mechanical) Rear fan connector
Microprocessor 2 memory slot 1 (DIMM1) Microprocessor 2 memory slot 5 (DIMM5) Microprocessor 2 memory slot 2 (DIMM2) Microprocessor 2 memory slot 6 (DIMM6) Microprocessor 2 12 volt power connector Microprocessor 2
