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Green rectangular circuit board with silver M.2 connectors and gold edge fingers

Lenovo

Lenovo 4Y37A90063 M.2 RAID B540i-2i SATA/NVMe Adapter server accessory

SKU CH-GNSB-QEMQZ MPN 4Y37A90063

Adds RAID support for two M.2 SATA or NVMe drives to compatible servers

  • M.2 RAID adapter enables SATA and NVMe drive support
  • B540i-2i controller provides hardware RAID for up to four drives
  • Low-profile design fits dense server chassis configurations
  • New Lenovo server accessory with manufacturer part number 4Y37A90063
  • First listed by manufacturer in 2026 for current platform compatibility

Lenovo M.2 RAID B540i-2i Adapter

The Lenovo 4Y37A90063 is a server accessory that adds an M.2 RAID controller to compatible systems. It supports both SATA and NVMe protocols for flexible storage configuration. This adapter enables hardware RAID across two M.2 drives. It is designed for integration into supported Lenovo server platforms.

Suits servers needing boot or cache RAID

This adapter suits administrators who want hardware RAID 0 or 1 on M.2 media for operating system redundancy or high-speed caching. It is not for buyers who need more than two M.2 devices on a single controller. It is not for systems lacking the dedicated B540i-2i connector or bracket. Buyers requiring software RAID only should look at alternative options.

Dual M.2 hardware RAID support

The single specification that decides fitment is the onboard controller's ability to manage two M.2 drives in RAID 0 or 1 using SATA or NVMe interfaces. Verify the server motherboard provides the correct proprietary slot for this 4Y37A90063 module. Without that specific connector the adapter cannot function. Compatibility lists should be checked before purchase.

How it compares

Measured against everything we stock in Drive Cages & Server Add-Ons, at today’s prices. Recalculated every night.

Price $645.99
Pricier than about 89% of the 1,119 comparable items (median $74.99).

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Specifications

Size & build
Shipping weight0.45 kg
Package size244 × 152 × 56 mm

Questions about this item

How do I verify the M.2 RAID B540i-2i SATA/NVMe Adapter is functioning after installation?

Check the server BIOS or RAID utility to confirm the adapter appears and detects connected M.2 drives in the expected RAID configuration.

What is included with the 4Y37A90063 adapter and what must be purchased separately?

The adapter board is included; M.2 SATA or NVMe drives and any required mounting brackets or cables are sold separately.

Which version of the Lenovo M.2 RAID adapter should I select for my server?

Choose the 4Y37A90063 B540i-2i model when your server supports this specific M.2 RAID adapter for SATA and NVMe drives.

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