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NVIDIA ConnectX-5 Ex OCP 2.0 card with dual QSFP28 ports

NVIDIA

NVIDIA ConnectX-5 Ex MCX546A-EDAN network card 100GbE dual QSFP28 PCIe 4.0 OCP 2.0

SKU CH-SBMF-SVY5G MPN ConnectX-5

Dual-port QSFP28 adapter delivers 100GbE over PCIe 4.0 in OCP 2.0 form factor

  • Interface typePCI Express Gen 4.0
  • Connection typesDual-port belly-to-belly QSFP28
  • Product dimensions3.07 in × 4.33 in (78 mm × 110.05 mm)
  • Dual 100 GbE ports for high-throughput connectivity
  • PCIe 4.0 x16 interface delivers 16.0 GT/s bandwidth
  • OCP 2.0 Type 2 form factor fits dense servers
  • Supports 10, 25, 40, 50 and 100 GbE speeds
  • Compact 78.00 mm × 110.05 mm low-profile design

100GbE dual-port QSFP28 adapter

This ConnectX-5 Ex network card delivers 100GbE connectivity through two belly-to-belly QSFP28 ports. It is built for single-host servers and storage nodes that require high-throughput InfiniBand or Ethernet links in an OCP 2.0 Type 2 form factor. The PCIe 4.0 x16 interface provides the bandwidth needed for line-rate performance.

PCIe 4.0 x16 lane requirement

The card operates at PCIe Gen 4.0 x16 with SERDES at 16.0GT/s, falling back to Gen 3.0 x16 at 8.0GT/s. A slot with fewer than 16 lanes will limit throughput below the advertised 100GbE per port. The OCP 2.0 Type 2 stacking height also demands a compatible cage; standard PCIe brackets will not fit.

Verify OCP cage and QSFP28 cabling

Before ordering, confirm your chassis accepts an OCP 2.0 Type 2 card with 3.07in by 4.33in dimensions and the belly-to-belly QSFP28 connector orientation. Ensure you have suitable 100GbE QSFP28 transceivers or direct-attach cables for the chosen protocol. Buyers needing a standard PCIe bracket or single-port connectivity should consider other models.

How it compares

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

Price $383.99
Pricier than about 82% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameMellanox
Model nameConnectX-5 Ex InfiniBand
Part numberMCX546A-EDAN
Ports & slots
Interface typePCI Express Gen 4.0
Connection typesDual-port belly-to-belly QSFP28
Size & build
Product dimensions3.07 in × 4.33 in (78 mm × 110.05 mm)

Questions about this item

Which ConnectX-5 Ex variant matches the MCX546A-EDAN part number?

This is the dual-port 100 GbE QSFP28 OCP 2.0 Type 2 card with PCIe 4.0 x16 SERDES at 16.0 GT/s.

What Ethernet speeds does the adapter actually deliver in a server?

The card supports 10, 25, 40, 50 and 100 Gb/s Ethernet per port, limited by the QSFP28 transceiver and switch you install.

What does the PCIe 4.0 x16 interface cap in practice?

The SERDES runs at 16.0 GT/s, giving a raw lane rate that supports the full dual-port 100 GbE bandwidth.

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