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- Description
- Specifications
Lenovo lists 4Y37A90063 (feature code BYFF) as the ThinkSystem M.2 RAID B540i-2i SATA/NVMe Adapter. It takes one or two M.2 drives, either SATA or NVMe, and the drives are not hot-swap.
Drive lengths of 42, 60, 80 and 110 mm are supported (2242, 2260, 2280 and 22110). RAID comes from an onboard Broadcom SAS3808N controller: one drive runs as JBOD, and two drives can run as RAID 0, RAID 1 or JBOD.
The host connection is PCIe 4.0 x2, with a PCIe 4.0 x1 link to each drive. Lenovo lists NVMe support at x1, SATA support, and SED drive encryption support.
Management and configuration are through UEFI and OS-based tools, with event and temperature monitoring and firmware updates through Lenovo's firmware update tools.
Related M.2 adapters are the 4Y37A79663 SATA/x4 NVMe 2-bay adapter, which has no RAID, and the 4Y37A09739 SATA 2-bay RAID adapter on a Marvell controller.
Alternatives to 4Y37A90063 are in the Lenovo interface card category.
| Option part number | 4Y37A90063 |
| Feature code | BYFF |
| Drives supported | 1 or 2 M.2, SATA or NVMe |
| Hot-swap | No |
| M.2 lengths | 2242, 2260, 2280, 22110 |
| RAID controller | Broadcom SAS3808N |
| RAID | JBOD (1 drive); RAID 0, RAID 1, JBOD (2 drives) |
| Host interface | PCIe 4.0 x2 (x1 to each drive) |
| SED support | Yes |
| NVMe | Yes (x1) |