DeLOCK M.2 Key B+M male to 4xSATA 7-pin converter, Marvell chipset, RAID0/1/10/JBOD, NCQ, PCI-e 2.0, bootable
This converter by Delock expands the system by four SATA ports. When using more than one SATA port, there is the possibility to use different RAID modes. The converter supports a hyperduo function. With this function it combines an SSD and an HDD to use the advantages of both data mediums, the speed of an SSD and the capacity of an HDD. 
Specification 
• Connectors:
  1 x 59 pin M.2 key B+M male >
  4 x SATA 6 Gb/s 7 pin plug
  1 x 2 pin pin header for LED
• Chipset: Marvell
• Interface: PCIe 2.0
• Form factor: M.2 3042
• Suitable for M.2 slot with key M or B+M based on PCIe
• Data transfer rate up to 6 Gb/s
• Supports Raid 0, 1, 10, JBOD, HyperDuo Virtual Disk (Safe/Capacity)
• Supports HDD and SSD
• Supports Native Command Queuing (NCQ)
• Bootable
Package contents: Converter, Driver CD and User manual 
Dimensions(WxDxH):42x30x13mm