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Low-profile PCIe card with four SFF-8643 connectors

Supermicro

Supermicro AOC-SLG3-4E4R-O RAID controller 12.8 Gb/s quad-port NVMe PCIe 3.0 x16 low-profile

SKU CH-SB2J-HCZK0 MPN AOC-SLG3-4E4R-O

Adds four NVMe drives through SFF-8643 connectors on a PCIe 3.0 x16 low-profile card

  • Form FactorPlug-in Card
  • TypeSAS Controller
  • InterfacePCI Express
  • Quad-port NVMe connectivity via four SFF-8643 connectors
  • 8 Gb/s throughput on PCIe 3.0 x16 host interface
  • Low-profile 2.7" height fits compact server chassis
  • SAS controller design enables direct NVMe drive attachment
  • RoHS certified for environmentally responsible deployment

Four-port NVMe HBA for low-profile servers

This Supermicro AOC-SLG3-4E4R-O is a PCI Express 3.0 x16 host bus adapter that adds four internal NVMe connections through SFF-8643 ports. It targets enterprise servers needing dense, high-speed flash storage in a low-profile slot. The card suits near-line cache tiers where data stages before moving to backend arrays.

Sustained throughput across four lanes

Each of the four ports operates at up to 12.8 Gb/s using PCIe 3.0 signalling, so aggregate bandwidth scales with the number of attached drives. The on-board redriver maintains signal integrity over the SFF-8643 cables during continuous read and write streams. Thermal load stays within the low-profile envelope without requiring active cooling on the card itself.

Straightforward drop-in for compatible backplanes

Installation is a single x16 insertion; the 2.7-inch height fits standard low-profile brackets. The only common issue is mismatching the SFF-8643 pin-out to the backplane or using cables rated below the 12.8 Gb/s lane speed, which caps performance. Verify the server BIOS exposes the x16 link at Gen 3 before deployment.

Pontos fortes

  • Quad-port NVMe connectivity via four SFF-8643 connectors
  • 8 Gb/s throughput on PCIe 3.0 x16 host interface
  • Low-profile 2.7" height fits compact server chassis
  • SAS controller design enables direct NVMe drive attachment
  • RoHS certified for environmentally responsible deployment

Especificações

BrandSUPERMICRO
Form FactorPlug-in Card
TypeSAS Controller
InterfacePCI Express
Peso de envio3.18 kg
Dimensões da embalagem260 × 194 × 73 mm

Perguntas sobre este artigo

How much heat does the PCIe 3.0 x16 HBA add when running four NVMe drives continuously?

The low-profile card uses a PCIe 3.0 x16 redriver design with no active cooling, so thermal output stays minimal inside a server chassis with normal airflow.

Which cables or drive trays must I already have to connect four NVMe SSDs to the four SFF-8643 ports?

You need four SFF-8643 (Mini SAS HD) to U.2 or U.3 cables, or a backplane with matching SFF-8643 receptacles, to attach the NVMe drives.

Will the card work in an older server that only offers PCIe 2.0 x16 slots?

The adapter is PCIe 3.0 x16 and will fall back to PCIe 2.0 speeds if installed in a Gen-2 slot, halving the 12.8 Gb/s aggregate bandwidth.

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