Package Contents: (1) SATA III 4-port PCI-e 3.0 x1 Slot Controller Card
(1) Driver CD
(2) 19" SATA Cable
(1) Standard and Low Profile Brackets
(1) User Manual
Specifications: Form Factor
Thunderbolt rackmount enclosure
External Connectors
Two Thunderbolt ports
Power (C14-type)
Internal Connector
6-pin Mini-Fit Jr (same type as on legacy Mac Pro motherboard; provides up to 75W of power for PCIe cards that require supplemental power)
Expansion Slots (Facing Rear, Top to Bottom)
One x8 mechanical (x8 electrical) PCIe 3.0
One x16 mechanical (x8 electrical) PCIe 3.0
One x8 mechanical (x4 electrical) PCIe 3.0
PCIe Cards Supported
Three full-length, full-height, single-width PCIe cards or
One full-length, full-height, double-width PCIe card, plus one single-width card