We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
PCIe 4.0 x16 plug-in card with dual QSFP28 ports

BFKK

BFKK MCX516A-CDAT ConnectX-5 100GbE dual-port QSFP28 network card

SKU CH-TNMA-1YHTX

Dual-port QSFP28 adapter delivering 100 Gbit/s Ethernet over PCIe 4.0 x16 with sub-700 ns latency

  • Dual 100 Gbit/s ports deliver massive bandwidth
  • PCI Express 4.0 x16 host interface enables high throughput
  • Sub-700 nanosecond latency accelerates demanding workloads
  • ASAP2 technology offloads virtual switching from the CPU
  • NVMe over Fabric offloads boost storage platform efficiency

Dual-Port 100GbE QSFP28 Adapter

The BFKK MCX516A-CDAT ConnectX-5 is a dual-port QSFP28 network card delivering 100 Gbit/s Ethernet connectivity over a PCI Express 4.0 x16 host interface. It is built for data-centre servers and high-performance computing clusters that require low-latency, high-throughput networking.

Suits cloud, analytics and storage workloads

This adapter targets platforms running cloud infrastructure, web-scale services, data analytics and storage fabrics that benefit from hardware offloads such as ASAP2 virtual-switch acceleration and NVMe over Fabric support. It is not suited for builds that require Fibre Channel connectivity or single-port 100GbE density.

PCI Express 4.0 x16 host interface

The card installs into a PCIe 4.0 x16 slot and presents two QSFP28 cages for 100 Gbit/s links. Sub-700 nanosecond latency and high message-rate performance are enabled by the ConnectX-5 controller, making the host interface width the key specification for platform compatibility.

Highlights

  • Dual 100 Gbit/s ports deliver massive bandwidth
  • PCI Express 4.0 x16 host interface enables high throughput
  • Sub-700 nanosecond latency accelerates demanding workloads
  • ASAP2 technology offloads virtual switching from the CPU
  • NVMe over Fabric offloads boost storage platform efficiency

Specifications

No published specifications for this item yet.

Questions about this item

What does the 100 Gbit/s rate mean when the card is installed in a server?

It delivers up to 100 Gbit/s per port over two QSFP28 links, with sub-700 nanosecond latency and very high message rates for demanding workloads.

How does the PCI Express 4.0 x16 host interface affect throughput?

The x16 lane width matches the card's dual 100 Gbit/s ports so the bus does not become the bottleneck.

What slot and physical space does this plug-in card require?

It needs a full-height PCIe x16 slot and clearance for two QSFP28 transceiver cages on the bracket.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.