ThinkSystem M.2 SATA 2-Bay RAID Enablement Kit the M.2 SATA 2-Bay RAID Enablement Kit (4Y37A09739) has the following features: Supports one or two SATA M.2 drives Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110) RAID support via an onboard Marvell 88SE9230 SATA RAID Controller Support JBOD, RAID-0 and RAID-1 (RAID support requires two M.2 drives) PCIe 2.0 x2 host interface; 6Gbps SATA connection to the drives Management and configuration support via UEFI and OS-based tools Supports monitoring and reporting of events and temperature through I2C Firmware update via Lenovo firmware update tools