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