HD, 300GB, 512b, SAS, 15K

Dell 400-ASG is a 300 GB hard drive for adding data storage to a compatible system. It uses a SAS interface and has a 15,000 rpm spindle speed, identifying this as a fast-spinning hard disk rather than a solid-state drive.

The listed sector format is 512 bytes. PC21 specifies a 2.5-inch form factor and a 32 MB buffer. Together, these details describe the drive’s capacity, connection type and physical format for system planning. The listing identifies the item by Dell part number 400-ASG.