IBM System x3250 M3 Type 4251 Installation And User Manual page 62

12. Align the ServeRAID-MR10i SAS/SATA adapter so that the keys align correctly
13. Make sure that the riser-card assembly keys align correctly with the connectors
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IBM System x3250 M3 Types 4251, 4252, and 4261: Installation and User's Guide
SAS/SATA signal
cable
Hard disk drive
backplane
configuration cable
Hard disk
drive backplane
with the connector on the riser-card assembly.
Adapter
Riser-card
assembly
Attention: PCI expansion-slot covers must be installed on all vacant slots.
This maintains the electronic emissions characteristics of the server and
ensures proper cooling of server components.
on the system board and press down on the riser-card assembly until it is
seated firmly into the connectors on the system board.
Microprocessor
Heatsink
Orientation
DIMMs
DIMMs
Expansion-slot cover
Expansion slot 2
Expansion slot 1
Expansion-slot cover
Adapter
Guide channels