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ThinkSystem ST550 2.5" SATA/SAS 4-Bay Backplane Kit

This document provides important information about the ThinkSystem ST550 2.5" SATA/SAS 4-Bay Backplane Kit.

The option package contains the following items:

1 2.5" SATA/SAS 4-Bay backplane

2 4x2.5" HDD cage

3 4x2.5" HDD backplane power cable

4 4x2.5" HDD backplane signal cable

5 HDD sequence label (8-11)

6 HDD sequence label (16-19)

7 Velcro for 4x2.5" mini-SAS cable

8 1x1 2.5" HDD fillers (4)

  • Some package items might be assembled together for easy shipping.
  • Fan 3 is required after the 4-Bay Backplane Kit is installed. If your server does not come with Fan 3, purchase the front fan option before you install the 4-Bay Backplane Kit. The front fan option name is ThinkSystem ST550 Front Mid Fan Module for 4x2.5" ODD Conversion.

Store the documentation for future reference. For information about installing the option product, refer to the Setup Guide for your server. The most up-to-date Setup Guide is always available for download at:

To get the latest technical information and download device drivers and updates, go to: