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