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Cisco UCS C420 Server Installation and Service Guide
OL-27640-01
Chapter 3 Maintaining the Server
Preparing for Server Component Installation
Replaceable Component Locations
This section shows the locations of the components that are discussed in this chapter. The view in
Figure 3-5 is from the top down with the top cover removed.
Figure 3-5 Replaceable Component Locations
1 Drive bay module 2
(up to eight 2.5-inch drives, hot-pluggable)
9 Power supply 2 (hot-pluggable)
2 Drive bay module 1
(up to eight 2.5-inch drives, hot-pluggable)
10 USB 2.0 slot on motherboard
3 Fan tray, with six hot-pluggable fan modules 11 PCIe slots 2–6 on motherboard
See also Figure 3-23 on page 3-40 for details.
4 Drive backplane transition cards
(up to two on chassis floor, not visible under
fan tray in this view)
12 I/O riser (includes two sockets for SD cards)
5 CPUs and heatsinks (two or four) 13 Power supply 1 (hot-pluggable)
6 DIMM sockets on motherboard (up to 48) 14 PCIe riser 2 (horizontal PCIe slot 1)
7 RTC battery on motherboard 15 TPM socket (on motherboard, not visible
under power supply in this view)
8 PCIe riser 1 (horizontal PCIe slot 7) 16 RAID backup unit (supercap power module)
mounting location
(two, on air baffle not shown in this view)
FAN 1
FAN 2
FAN 3
FAN 4
FAN 5
FAN 6
DIMM L
DIMM M
DIMM G
DIMM H
DIMM K
DIMM J
DIMM F
DIMM E
DIMM R DIMM C
DIMM S DIMM D
PCle 7
PCle 6
PCle 5
PCle 4
PCle 3
PCle 2
PCle 1
DIMM P DIMM B
DIMM N DIMM A
CPU 3 CPU 2
CPU 4 CPU 1
15
9
10
12
13
14
11
3 6 7 854
2
1
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