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Dell CX380A mezzanine network card with dual silver ports on green PCB

DELL

DELL CX380A 40 Gb/s Dual Port InfiniBand Mezzanine Network Card

SKU CH-319V-979P7 MPN CX380A

A dual-port InfiniBand mezzanine card delivering 40 Gb/s connectivity for compatible Dell servers

  • Dual-port design doubles bandwidth for high-throughput clusters
  • 40 Gb/s QDR InfiniBand cuts latency in compute grids
  • Mezzanine form factor fits dense blade chassis
  • ConnectX-3 controller offloads protocol processing from CPUs
  • New condition ensures full factory specification compliance

Dual-Port 40 Gb/s Mezzanine Card

The Dell CX380A is a dual-port InfiniBand mezzanine card delivering 40 Gb/s QDR connectivity. It uses Mellanox ConnectX-3 technology for high-throughput, low-latency fabric links. The card targets servers and blade systems that require dense, high-speed networking in a compact form factor. It installs directly into a compatible mezzanine slot.

Replacing Single-Port or Lower-Speed Links

This card upgrades single-port InfiniBand adapters or older SDR and DDR connections by doubling port count and moving to QDR bandwidth. The jump is worth it when cluster workloads demand more aggregate throughput or redundant fabric paths. It fits refresh cycles where the chassis already supports mezzanine ConnectX-3 modules. No larger slot or external cabling is required.

Suits Blade and Dense Server Builds

The CX380A suits administrators expanding InfiniBand clusters inside supported Dell blade enclosures or dense rack servers with mezzanine slots. It is not for teams needing Ethernet connectivity, PCIe add-in cards, or speeds beyond 40 Gb/s. Buyers without a validated mezzanine slot or ConnectX-3 driver stack should look at other form factors.

Highlights

  • Dual-port design doubles bandwidth for high-throughput clusters
  • 40 Gb/s QDR InfiniBand cuts latency in compute grids
  • Mezzanine form factor fits dense blade chassis
  • ConnectX-3 controller offloads protocol processing from CPUs
  • New condition ensures full factory specification compliance

Specifications

BrandDell
ModelCX380A

Questions about this item

What mezzanine slot does the CX380A require?

The CX380A is a mezzanine card that installs into a compatible Dell server mezzanine slot; verify your server model supports this form factor before purchase.

How is the card seated, and what step is often missed?

Align the card with the mezzanine connector, press firmly until fully seated, then secure the retention screw; the step often missed is fastening that screw, which prevents the card from working.

What replacement will this card need over time?

The CX380A has no user-serviceable parts; if a port or the ConnectX-3 controller fails, the entire mezzanine card must be replaced.

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