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4Y37A09730: lenovo ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter

lenovoRAID controllersPCIe 4.0 x8

Also listed as: 4Y37A09730-01, 01PE818, SP47A49283, B8NZ, MegaRAID 940-16i, SAS3916

Flagship 16-port internal PCIe 4.0 Tri-Mode RAID adapter with 8GB flash cache supporting SAS, SATA, and NVMe drives on ThinkSystem V2 servers.

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Specifications

Part number4Y37A09730
Brandlenovo
TypeRAID controllers
Other numbers4Y37A09730-01, 01PE818, SP47A49283, B8NZ, MegaRAID 940-16i, SAS3916
InterfacePCIe 4.0 x8
Ports16
Data transfer rate12Gb/s SAS / 6Gb/s SATA / PCIe Gen4 NVMe
Raid levels0, 1, 10, 5, 50, 6, 60
Cache size mb8,192
Form factorLow Profile PCIe

About the 4Y37A09730

The Lenovo 4Y37A09730 is a premier 16-port PCIe 4.0 Tri-Mode internal RAID controller powered by the Broadcom SAS3916 dual-core ROC. Featuring an expansive 8GB of DDR4-2666 cache and CacheVault flash protection, it provides high-throughput RAID 0, 1, 5, 6, 10, 50, and 60 storage management across SAS, SATA, and direct-attached U.3 NVMe SSDs. It is the flagship RAID option for ThinkSystem V2 servers.

Compatibility

Engineered for Lenovo ThinkSystem SR650 V2, SR630 V2, SR645, SR665, and ST650 V2 servers. It utilizes four SlimSAS (SFF-8654) internal connectors for flexible high-density cabling to Gen4 Tri-Mode backplanes. It requires connection to a supercapacitor power module to maintain write-cache integrity during unexpected power loss events.

How to identify a genuine unit

The board carries an official Lenovo inventory label displaying option part number 4Y37A09730, FRU code 01PE818, and feature code B8NZ. It is equipped with four SlimSAS internal ports and a massive heatsink over the SAS3916 controller. In UEFI and XClarity management, it registers as ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter.

Buying used

When sourcing a used 940-16i card, verify that all four SlimSAS connectors show no cracked plastic latches or pin damage. Ensure that the original 8GB CacheVault power module and connecting ribbon cable are included. Run XClarity diagnostics to verify full PCIe 4.0 x8 negotiation and complete cache memory validation.

Reference prices (last 12 months, updated 2026-10-19)

Refurbished: USD 310 (1 sighting, Sep 2026)

Used: USD 260 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
eBayusedUSD 260eBay sold listing2026-10-19
ServerMonkeyrefurbishedUSD 310Tested working pull with 8GB cache supercap2026-09-29

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

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