Suits 1U form factor chassis at only 32mm total heightSupport 1 x NVMe M.2 SSD (M key) utilizing PCIe x4 interfaceSupport 1 x SATA M.2 SSD (B key)Allows concurrent usage of both M.2 SSD slotsSupports PCIe Gen4Supports SATA 6GbpsBuilt-in LED status indicatorSupports PCIe CLKREQ# functionModel No.SST-ECM28InterfacePCI Express x4 / SATA 6 GbpsSSD InterfaceNVMe & SATAModule KeyPCIe x4 NVMe-based M keySATA-based B keyNumber of Drives2Support Type of M.2 SSD22x30mm, 22x42mm, 22x60mm, 22x80mmLED indicatorNVMe SSD: power / data access: Solid blue / Blinking blueSATA SSD: power / data access: Solid red / Blinking redDimension15.5mm (W) x 32mm (H) x 118.4mm (D)Remark* ECM28’s 'M' key is for use only with PCIe SSD, 'B' key is for use with only SATA SSD** B key SSD requires SATA 7 pin cable connected to motherboard to function*** M.2 PCIe NVMe mode SSD requires the use of Intel® 9 series (Z97 H97 Z170 X99) or higher version chipset motherboard with Windows 8 or higher version operating system**** If there are compatibility issues such as device not being recognized or detected between your operating system and ECM28, please update your driver or BIOS on your motherboard to the latest version. You can also try running the system compatibility mode in your operating system and select the previous operating system version to install the drivers required for ECM28.