4Y37A09728: Lenovo ThinkSystem RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter
Also listed as: 01PE816, 4Y37A09728-01, B8NY, Broadcom SAS3916, SP47A49282, 940-8i · made by Broadcom
The Lenovo ThinkSystem RAID 940-8i is an advanced PCIe 4.0 internal storage controller powered by the Broadcom SAS3916 dual-core ARM ROC, supporting Tri-Mode technology for SAS, SATA, and NVMe U.2/U.3 direct RAID configurations. Equipped with 4GB of 2666MHz DDR4 write cache protected by a supercapacitor-backed flash vault module, it supports hardware RAID levels 0, 1, 10, 5, 50, 6, and 60 with hardware RAID encryption capabilities. Operating over native PCIe 4.0 x8, it delivers up to 3 million IOPS for heavy transactional database and virtualization environments across ThinkSystem V2 and V3 platforms. Used buyers should verify supercapacitor module health in XClarity.
Specifications
| Part number | 4Y37A09728 |
|---|---|
| Brand | Lenovo |
| Made by | Broadcom |
| Type | RAID controllers |
| Other numbers | 01PE816, 4Y37A09728-01, B8NY, Broadcom SAS3916, SP47A49282, 940-8i |
| Status | current |
| Interface | PCIe 4.0 x8 |
| Form factor | Low profile PCIe adapter card with full-height and low-profile brackets |
| Ports | 2x internal SlimSAS x4 (SFF-8654) connectors, 8 ports |
| Cache (GB) | 4 |
| Speed | 12Gb/s SAS, 6Gb/s SATA, and PCIe Gen4 NVMe Tri-Mode |
| Generation fit | ThinkSystem V2 and V3 servers (SR650 V2, SR630 V2, SR650 V3, SR630 V3, ST650 V2) |
About the 4Y37A09728
4Y37A09728 is Lenovo's high-performance 8-port internal PCIe 4.0 Tri-Mode hardware RAID adapter, based on the Broadcom MegaRAID SAS3908 processor. Equipped with 4GB of onboard DDR4 cache and an included flash power module, it provides hardware RAID 0, 1, 5, 6, 10, 50, and 60 across 12Gb/s SAS, 6Gb/s SATA, and PCIe Gen4 NVMe drives. It is the premier PCIe Gen4 RAID controller for ThinkSystem V2 and V3 servers, replacing the older PCIe 3.0 RAID 930 series.
Compatibility
The controller is engineered for ThinkSystem SR650 V2, SR650 V3, SR630 V2, SR630 V3, SR665, and SR645 servers. It installs into a PCIe 4.0 x8 slot and connects to server drive backplanes using high-density SlimSAS cables. It does not use legacy Mini-SAS HD cables. It does not fit ThinkSystem V1 servers without specific cable kits. It requires connection to its companion flash backup power module (supercap) to enable write-back caching.
How to identify a genuine unit
A genuine Lenovo RAID 940-8i carries a barcode label displaying option part number 4Y37A09728, FRU part number 02JG666 or SP47A09728, and feature code B6CE. The card features two internal SlimSAS x4 connectors and an onboard CacheVault header. In XClarity Controller and StorCLI, the adapter identifies as ThinkSystem RAID 940-8i with Lenovo custom firmware and 4GB memory capacity.
Buying used
Always confirm that the seller includes the flash power module (supercapacitor) and connecting harness, as replacing it separately is costly. Check that the 4GB onboard memory passes self-test during boot. Inspect the SlimSAS connector plastic housings for cracks or chipped retention tabs. Verify that the firmware is genuine Lenovo firmware and not cross-flashed generic LSI firmware.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 820 (1 sighting, Oct 2026)
Used: USD 340 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| provantage.com | new | USD 820 | New in factory sealed Lenovo box with cache power module | 2026-10-27 |
| ebay.com | used | USD 340 | Tested working pull with 4GB cache and power vault supercap | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
- Lenovo ThinkSystem SR650 V2
- Lenovo ThinkSystem SR630 V2
- Lenovo ThinkServer SR660 V2
- Lenovo ThinkSystem SR650 V3
- Lenovo ThinkSystem SR630 V3
- Lenovo ThinkSystem ST650 V2
- Lenovo ThinkSystem ST650 V3
Equivalent part numbers
- Broadcom MegaRAID 9560-8i Retail MegaRAID 9560-8i 4GB PCIe 4.0 Tri-Mode hardware RAID controller
FAQ
What is Tri-Mode capability on the RAID 940-8i?
Tri-Mode allows SAS, SATA, and NVMe PCIe Gen4 solid-state drives to operate simultaneously under hardware RAID protection.
What connectors are on the RAID 940-8i card?
It uses dual SlimSAS x4 internal connectors (SFF-8654) to connect high-speed backplanes.
Buying or selling 4Y37A09728?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Lenovo ThinkSystem RAID 940 Series Internal RAID Adapters Product Guide, checked 2026-10-27