Expansive | 4 NVMe SSDs with one slot: Add up to four NVMe SSDs to your computer with a single x4 PCIe 3.0 adapter card. The package includes everything necessary including M.2 screws and a screwdriver. Installation is simple and easy! | Resilient | Cool and Dependable: Cool your drives efficiently with the included aluminum heatsink. Integrated silicone thermal padding helps maximize heat dissipation so that your drives never throttle. The housing also adds structural support to the adapter card for more protection. | Compatible | Fast with legacy support: Fits in x4, x8, and x16 PCIe slots. The adapter card is backward compatible with PCIe 2.0/1.0 at respective maximum bandwidths.This adapter card is an effective way to add additional NVMe storage to older systems and can take advantage of higher speeds and lower latency. Supports a PCIe maximum payload size of 512 bytes for maximum performance. | Efficient | Wide power protocol support: Supports multiple power protocols including Active State Power Management (ASPM) with the L0s/L1//L23/L3 power states and L1 sub-states. The adapter is also compliant with the S3 and S4 sleep states. It supports Latency Tolerance Reporting (LTR), Advanced Error Reporting (AER), and Separate Reference Clock with Independent Spread (SRIS) for maximum efficiency. | Support | Backed by SABRENT: This adapter only supports M-Key NVMe SSDs, not B- or B&M-key SSDs. Supports the Windows 8.1+ and macOS 10.3.3+ operating systems. Please visit us to register your product and to engage our technical support team.