Step 1.  Position the front system fan where the four tabs are aligned with the corresponding holes in the 
mounting area. In addition, ensure that the two posts of the front system fan are aligned with the 
corresponding holes in the inner side of the chassis; then, carefully slide the front system fan into 
the chassis until it snaps into position. 
Note: When installing the front system fan into the chassis, make sure the cables do not interfere 
with the two posts and the fan is firmly seated. 
Figure 48. Front system fan installation
Step 2.  Connect the front system fan power cable to the Fan 1 or Fan 4 connector on the system board. 
See “System board components” on page 27 and “Fan power cable” on page 31.
Install a hot-swap drive
Use this information to install a hot-swap drive.
“Read the  
installation  
Guidelines” on 
page 54
“ATTENTION:  
Static Sensitive Device  
Ground package before opening” 
on page 55
The following notes describe the type of drives that your server supports and other information that you must 
consider when you install a drive.
•  Depending on your server models, your server supports the following drive types: 
–  Solid-state drives
–  SAS/SATA drives
For a complete list of supported optional devices for the server, see:
https://static.lenovo.com/us/en/ 
serverproven/index.shtml
68 ThinkSystem ST250 Setup Guide