Technical Specifications

Table 10. Storage controller cards
Internal controllers External controllers
● S150
● PERC H345
● H355
● PERC H755
● H755N
● HBA355i
● Boot Optimized Storage Subsystem (BOSS-S2): HWRAID
2 x M.2 SSDs
● HBA355e
● PERC H840
Drive specifications
Drives
The PowerEdge T550 system supports:
● Up to 8 x 2.5-inch SAS/SATA/ (HDD) drives
●
Up to 16 x 2.5-inch SAS/SATA (HDD) drives
● Up to 24 x 2.5-inch SAS/SATA/ (HDD) drives
● Up to 8 x 3.5-inch SAS/SATA/ (HDD/SSD) drives
● Up to 8 x 3.5-inch SAS/SATA + 8 x 2.5-inch NVMe (HDD/SSD) drives
NOTE:
For more information about how to hot swap NVMe PCIe SSD U.2 device, see the Dell Express Flash NVMe PCIe
SSD User's Guide at https://www.dell.com/support Browse all Products > Data Center Infrastructure > Storage
Adapters & Controllers > Dell PowerEdge Express Flash NVMe PCIe SSD > Documentation > Manuals and
Documents.
Optical drives
The PowerEdge T550 system supports one Slim SATA DVD-ROM drive.
NOTE: DVD devices support only data.
Ports and connectors specifications
USB ports specifications
Table 11. USB specifications
Front Rear
USB port type No. of ports USB port type No. of ports
USB 2.0-compliant port One USB 3.0-compliant port One
USB 3.0-compliant port One USB 2.0-compliant port One
iDRAC Direct port (Micro-
AB USB 2.0-compliant port)
One
NOTE: The front micro USB 2.0 compliant port is only available for the upsell configuration.
NOTE: The micro USB 2.0 compliant port can only be used as an iDRAC Direct or a management port.
Technical specifications 9