4  5  2.5-inch/3.5–inch hot-swap drive bays 
The drive bays are used to install 2.5-inch and 3.5-inch hot-swap drives. When you install drives, follow the 
order of the drive bay numbers. The EMI integrity and cooling of the server are protected by having all drive 
bays occupied. The vacant drive bays must be occupied by drive bay fillers or drive fillers.
For more information about drive LEDs, see 
“Drive LEDs” on page 30.
Rear view
The rear of the server provides access to several components, including the power supplies, PCIe adapters, 
serial port, and Ethernet port.
Note: Depending on the configuration, your server might be slightly different from the image.
Figure 7. Rear view
20 ThinkSystem ST250 V3 System Configuration Guide