The SI-PEX40157 is a great accelerated secondary storage solution for any workstation with true PCIe 3.0 x8 bandwidth (x16 Interface). It has four M.2 NVMe ports to accept four NVMe M.2 SSDs, so each NVMe M.2 SSD has dedicated PCIe 3.0 x4 bus bandwidth. It delivers transfer speeds 20 times faster than SATA SSDs. By by-passing the traditional PCIe 3.0 x4 NVMe solutions, using the SI-PEX40157 will allow user add four M.2 NVMe into any non-Bifurcation PCIe x16 slot to achieve their full potential with a bandwidth of up to 6,500 MB/s.

Unlike onboard DMI 3.0 based NVMe solutions or Single NVMe PCI-e x4, which are forced to share a single PCIe 3.0 x4 lane with the motherboard's data ports, the SI-PEX40157 combines 4 M.2 drives to be able to run on PCIe 3.0 x8 lane bandwidth. This unique architecture allows the drive to interface directly with the platform's CPU, which provides PCIe x4 bandwidth for each NVMe SSD!