IBM System x3550 M3 Type 4254 Problem Determination And Service Guide

v ServeRAID-M10i adapter: Take the signal cable that is attached to the drive
backplane for drive bays 0 through 3 and connect it to the connector on the
ServeRAID adapter connector that is closest to the power-supply cage.
Connect the other signal cable so that is attached to the drive backplane for
drive bays 4 and 7 and connect it to the other connector on the adapter.
204 IBM System x3550 M3 Types 4254 and 7944: Problem Determination and Service Guide

IBM System x3550 M3 Type 4254 Specifications

General

Processor	Intel Xeon 5600 series
Max Processors	2
Memory	Up to 192 GB DDR3
Form Factor	1U Rack
Chipset	Intel 5520
Drive Bays	Up to 4 hot-swap 2.5-inch SAS/SATA or SSD
RAID Support	RAID 0, 1, 10
Network Interface	Dual-port Gigabit Ethernet
Power Supply	460W or 675W
Expansion Slots	2 PCIe 2.0
Weight	Approximately 17.24 kg (38 lbs)
Memory Slots	18 (RDIMM) or 12 (UDIMM)