RIITOP 2- NVMe to NVMe Adapter for 2U (PCIe Bifurcation Required) RIITOP Dual PCIe NVMe Adapter allows you add 2x M.2 NVMe SSDs simultaneously via available PCI-e 4.0 x8/X16 Slot on Motherboard, the corresponding PCIe slot supports PCIe Bifurcation. Full-speed transmission up to 2x 32Gbps Hardware requirement: 1. There is available PCI-e 4.0 or 3.0 X8 or x16 Slot on Mobo 2. The corresponding PCIe slot on MOBO can support PCIe Bifurcation itself, and can be set as PCI-e x4x4x4x4 or X4X4X8 or Hyper M.2 X16 mode in BIOS (Note: Can NOT support X8X4X4 mode) 3. Both SSDs are M.2 PCI-e (M Key) NVMe SSD 4. CPU has enough channels to support Compatibility: 1. Compatible with M.2 PCI-e NVMe SSDs in all sizes:80x22mm, 60x22mm and 42x22mm, 30x22mm; Not support any M.2 (SATA-Based B+M Key) SSD; 2. Compatible with Windows 11/10/8/Linux/Mac OS 3. Low-Profile Bracket including, it can work on 2U Case OS Booting Support: if you want the added SSD as booting disk, please reinstall the OS, and set up BIOS/UEFI boot from this M.2 NVMe SSD in BIOS (Note: Some old motherboards does not support boot from NVMe SSD. In this case, M.2 NVMe SSDs can only work as data disks) Please note: 1. The motherboard need support PCIe Bifurcation , Otherwise, only one M.2 SSD can be recognized. Please check Motherboard's user manual on its official website if you are not sure the Mobo can support 2. Brand new M.2 SSD needs to be initialized and formatted first 3. RIITOP Dual NVMe PCIe Adapter does not Support Hardware Raid, only supports the formation of soft raid in Win10 , or you may build raid via Third-party Software, and 2 SSDs should be same model Package Including: 1x Dual NVMe to PCIe 4.0 Adapter; 1x Low-Profile Bracket; 1x Screwdriver; Screws ASIN B0FJF9QJTC Brand RIITOP Style Name Standard Unit Count 1 Count Manufacturer RIITOP Number of Items 1 Operating System Windows 11, Windows 10, Windows 8, Linux, Macos Compatible Devices Personal Computer, Laptop Hardware Interface PCI Express 4.0 Warranty Description 1 Year manufacturer