Lenovo ThinkServer RD550 - Manual (Page 40)

The following illustration shows the components of server models with 3.5-inch drives.
Figure 12. Components of server models with 3.5-inch drives
1 One or two hot-swap redundant power supplies 2 Secure digital (SD) module (available on some models)
3 DIMMs (vary by model) 4 System board
5 Cooling shroud 6 AnyRAID adapter
7 Front backplane for 3.5-inch drives 8 Rack handle (right)
9 ThinkServer RAID Super Capacitor Module
(available on some models)
10 3.5-inch-drive area
11 Rack handle (left) 12 Slim optical drive (available on some models)
13 System fans 14 Heat sink(s) with microprocessor(s) underneath
15 Rear backplane/cage assembly (available on
some models)
16 AnyFabric adapter 1 (available on some models)
17 Riser card assembly 1 18 Riser card assembly 2
26 ThinkServer RD550 User Guide and Hardware Maintenance Manual