"The M.2 NVMe 2-Bay RAID Enablement Kit has the following features:

Supports one or two NVMe M.2 drives
Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110)
RAID support via an onboard Marvell 88NR2241 NVMe RAID Controller
With 1 drive, supports single-drive RAID-0
With 2 drives, supports 2-drive RAID-0, 2-drive RAID-1, or two single-drive RAID-0 arrays
PCIe 3.0 x2 host interface; PCIe 3.0 x1 connection to each drive
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

Product Guide"