Dual Ports Mini SAS HD SFF-8644 To Internal Mini SAS SFF-8087 PCBA Female Adapter With Low Profile Bracket 2-Ports SFF-8087 to SFF-8644 Adapter with Full PCIe Slot Profile Mounting Bracket; External 8644 to internal 8087 adapter, will work both on the host and device side. Supports External SFF-8644 Host Connectors. Supports Internal SFF-8087 Device Connectors Supports up to 12Gb/s Mini SAS HD Data Transfer Rate With Lowe Profile and Standard Profile bracket. The High Density (HD) system referenced as HD Mini-SAS (SFF-8644) in the SAS 2.1 standard, meets the 12Gb/s SAS specification. These new HD Connectors will be used on the SAS 3.0 specification when it is released.