Backplate
Use this information to identify the drive backplate you use.
Two 3.5-inch drive backplate
Figure 1. Two 3.5-inch drive backplate
![Two 3.5-inch drive backplate](sr150075-250.png)
![Two 3.5-inch drive backplate](sr150075-250.png)
Four 3.5-inch drive backplate (connects to onboard SATA connectors)
Figure 2. Four 3.5-inch drive backplate (connects to onboard SATA connectors)
![Four 3.5-inch drive backplate (connects to onboard SATA connectors)](sr150074-300.png)
![Four 3.5-inch drive backplate (connects to onboard SATA connectors)](sr150074-300.png)
Four 3.5-inch drive backplate (connects to RAID x30 adapter)
Figure 3. Four 3.5-inch drive backplate (connects to RAID x30 adapter)
![Four 3.5-inch drive backplate (connects to RAID x30 adapter)](sr150073-250.png)
![Four 3.5-inch drive backplate (connects to RAID x30 adapter)](sr150073-250.png)
Four 3.5-inch simple-swap drives (connects to RAID x40 adapter)
Figure 4. Four 3.5-inch simple-swap drives (connects to RAID x40 adapter)
![Four 3.5-inch simple-swap drives (connects to RAID x40 adapter)](sr250-143-suo-250.png)
![Four 3.5-inch simple-swap drives (connects to RAID x40 adapter)](sr250-143-suo-250.png)
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