| Feature | SAS Backplane | Note | 
| # of HDD (3.5 inch) | 4 |  | 
| # of HDD (2.5 inch) | N/A |  | 
| SATA HDD Support | Yes |  | 
| SAS HDD Support | Yes | 1 | 
| SAS BP LED Control | Yes |  | 
| SGPIO | Yes |  | 
| Backplane Connector (to the Disk/RAID controller) | Mini SAS 4i (SFF-8087) |  | 
| SAS Expander | No |  | 
| SAS Backplane Monitoring (temperature, voltage, HDD presence) | Yes | 2 | 
NOTE1. Add-On LSI SAS RAID 9240-4i/9260-4i/9271-8i is required.
NOTE 2. SAS Backplane is only monitoring temperateure.