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Green Dell MCX383A-FCNA PCIe card low-profile bare PCB no bracket

DELL

DELL MCX383A-FCNA Single-Port Network Adapter Card XK4C4

SKU CH-9NYG-N16QN

Single-port PCIe x16 network adapter for high-throughput, low-latency enterprise workloads

  • Interface typePCI-Express
  • Product dimensions6.6 in (L) × 2.7 in (W) × 0.8 in (H)
  • Product weight0.3 lb (0.14 kg)
  • Single-port adapter maximises throughput for enterprise workloads
  • Mellanox ConnectX-3 Pro EN controller enables efficient packet processing
  • PCIe Gen3 x16 interface delivers full bandwidth potential
  • Compact low-profile PCB fits space-constrained builds at 6.6" x 2.7" x 0.8
  • Lightweight design at .3 lbs simplifies installation in dense racks

Single-Port Adapter for Enterprise Networking

The Dell MCX383A-FCNA is a single-port network adapter card built for high-performance enterprise environments. It uses a Mellanox ConnectX-3 Pro EN controller to deliver ultra-low latency and powerful throughput. The PCIe Gen3 x16 interface ensures full bandwidth potential for data centres, HPC clusters, and demanding virtualization workloads. Its compact low-profile PCB design fits space-constrained builds.

Installation Notes and Common Issues

The card installs into a PCI-Express x16 slot and requires no bracket, which is not included in the package. The low-profile PCB measures 6.6" in length, 2.7" in width, and 0.8" in height, weighing .3 lbs. Installers must supply a compatible bracket for their chassis to secure the card properly. Verify that the system provides a physical x16 slot and that the operating system includes driver support for the ConnectX-3 Pro controller.

Pre-Order Compatibility Checks

Confirm the target system has an available PCIe Gen3 x16 slot and sufficient physical clearance for the card dimensions. Ensure the chassis can accommodate a low-profile card and that you have an appropriate bracket for mounting. Check that your network infrastructure supports the adapter's single-port configuration and intended throughput requirements. Buyers needing multi-port connectivity or an included mounting bracket should consider other options.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 93% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameDell
Model nameMCX383A-FCNA
Part numberXK4C4
Ports & slots
Interface typePCI-Express
Size & build
Product dimensions6.6 in (L) × 2.7 in (W) × 0.8 in (H)
Product weight0.3 lb (0.14 kg)

Questions about this item

How do I confirm the MCX383A-FCNA is operating at full PCIe Gen3 x16 bandwidth after installation?

Verify link speed and width in the OS device manager or Mellanox firmware tools; they should report PCIe Gen3 x16 with no errors.

What ships with the MCX383A-FCNA and which mounting hardware must be sourced separately?

The adapter card ships alone; a low-profile or full-height bracket is not included and must be purchased separately for your chassis.

Which Dell part number identifies the MCX383A-FCNA variant with the ConnectX-3 Pro EN controller?

Part number XK4C4 (also listed as 0XK4C4 or IL-0XK4C4) identifies this single-port ConnectX-3 Pro EN adapter.

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