Featuring a unique Sonnet-designed x16 PCIe bridge, the card devotes four lanes of PCIe 3.0 bandwidth to each SSD you install. Sonnet’s M.2 4x4 PCIe card is a full-height, full-length PCIe 3.0 card with a 16-lane (x16) interface. However you use it, this card’s performance is impressive. Mac® users can even install macOS® on one SSD to create an incredibly fast boot drive (2) and create a RAID 0 set with the other installed SSDs without loss of performance. With the Sonnet M.2 4x4 PCIe card installed in your 2019 Mac Pro® or older Mac Pro tower Windows® or Linux® PC desktop or server or Thunderbolt™ to PCIe card expansion system with an available x16 PCIe slot, you can use it for instant-access media storage or as a high-performance scratch disk. Sonnet’s M.2 4x4 PCIe card enables you to mount four M.2 NVMe PCIe SSDs (1) onto a single x16 card slot-it can transform the way you work. Today’s NVMe PCIe SSDs offer tremendous performance, easily outclassing 2.5' SATA SSDs. If you need to add internal storage to your computer setup and high-speed data transfers are critical to your work, don’t look to 2.5' SATA SSDs-you need an NVMe SSD-based upgrade.