804326-B21: HPE Smart Array E208i-a SR Gen10 (8 Internal Lanes/No Cache) 12G SAS Modular Controller
Also listed as: 836259-001, 804329-001 · made by Microchip
The HPE Smart Array E208i-a SR Gen10 is an enterprise 12Gb/s SAS and 6Gb/s SATA entry storage controller designed for HPE ProLiant Gen10 servers. Installing into the dedicated Adaptive RAID On Chip (AROC) modular slot, it preserves standard PCIe slots while providing 8 internal drive lanes with support for RAID 0, 1, 5, 10 and direct HBA passthrough mode.
Specifications
| Part number | 804326-B21 |
|---|---|
| Brand | HPE |
| Made by | Microchip |
| Type | RAID controllers |
| Other numbers | 836259-001, 804329-001 |
| Status | current |
| Host interface | PCIe 3.0 x8 (Gen10 AROC modular slot) |
| Storage interface | 12Gb/s SAS, 6Gb/s SATA |
| Internal ports | 8 internal SAS/SATA lanes across 2x Mini-SAS HD (SFF-8643) connectors |
| Cache | No cache (zero-memory) |
| Raid levels | RAID 0, RAID 1, RAID 5, RAID 10 (software-assisted / basic HW) |
| Mixed mode | Simultaneous RAID and HBA mode operation supported |
About the 804326-B21
804326-B21 is the HPE Smart Array E208i-a SR Gen10 12G SAS modular controller, providing entry-level storage connectivity for HPE ProLiant Gen10 servers. Designed to plug into the motherboard's dedicated AROC mezzanine slot, it delivers eight 12Gb/s SAS / 6Gb/s SATA lanes without consuming a PCIe riser slot, supporting software-defined storage architectures and basic hardware RAID.
Compatibility
Compatible exclusively with HPE ProLiant Gen10 servers equipped with an AROC mezzanine slot, including DL380 Gen10, DL360 Gen10, DL580 Gen10, DL560 Gen10, and ML350 Gen10. Connects to internal SFF or LFF drive backplanes via standard HPE Gen10 internal SAS mini-SAS HD cables.
How to identify a genuine unit
Compact AROC form factor mezzanine circuit card with dual internal SFF-8643 mini-SAS HD ports and dedicated motherboard edge connector. The main barcode label displays option part number 804326-B21, spare part number 836259-001, and assembly part number 804329-001.
Buying used
Inspect the multi-pin AROC motherboard interface connector for bent or broken pins. Verify that both mini-SAS HD cable latches lock securely. Confirm via HPE Smart Storage Administrator (SSA) that the controller passes self-tests and that firmware updates to the latest release cleanly.
Reference prices (last 12 months, updated 2026-10-27)
Used: USD 75 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| ebay.com | used | USD 75 | Tested working HPE E208i-a Gen10 AROC SAS controller | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
- HPE ProLiant DL380 Gen10
- HPE ProLiant DL360 Gen10
- HPE ProLiant DL580 Gen10
- HPE ProLiant DL560 Gen10
- HPE ProLiant ML350 Gen10
- HPE Apollo 4510 Gen10
Check compatibility with HPE
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that HPE has tested with the HPE 804326-B21.
- Compatibility HPE SPOCK (storage, SAN and host compatibility)
- Part lookup HPE PartSurfer (spare and option part numbers)
- Support HPE Support Center
Equivalent part numbers
- Dell H330-MINI Dell PERC H330 12Gb/s SAS Mini Mono Controller
FAQ
Does the E208i-a require a Smart Storage Battery?
No, because the E208i-a is a zero-cache controller, it does not require a backup battery or capacitor pack.
What is the difference between E208i-a and P408i-a?
The P408i-a includes 2GB flash-backed write cache (FBWC) and requires a battery for write caching, whereas the E208i-a has no cache and focuses on entry RAID and direct HBA connectivity.
Buying or selling 804326-B21?
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
- HPE Smart Array Gen10 Controllers QuickSpecs, checked 2026-10-27
- HPE Apollo 4510 Gen10 System QuickSpecs, checked 2026-10-28