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