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Green circuit board with silver metal bracket and two Ethernet ports

Lenovo

Lenovo QL45212 50Gb 2-Port Ethernet Adapter PCIe 3.0 x16

SKU CH-FB3H-FE0JR

Adds dual 50GbE ports via PCIe 3.0 x16 for high-throughput server networking

  • Rated speed50GBase-X
  • Interface typePCI Express 3.0 x16
  • Key featuresProduct Type:50Gigabit Ethernet Card
  • Dual-port 50 Gbps throughput handles heavy server workloads
  • PCIe 3.0 x16 interface provides high-bandwidth host connection
  • 50GBase-X signalling supports modern data-centre fabrics
  • Two independent ports increase network redundancy options
  • Lenovo ThinkSystem branding ensures validated enterprise compatibility

Lenovo ThinkSystem QLogic QL45212 50Gb Adapter

This Lenovo ThinkSystem QLogic QL45212 is a 50GBase-X network interface card built for servers and high-density compute nodes. It connects through a PCI Express 3.0 x16 slot and presents two physical ports for 50 Gigabit Ethernet links. The adapter is supplied in new condition.

Suited for 50GbE uplinks and storage fabrics

It suits administrators deploying 50Gb Ethernet uplinks, storage fabrics or high-throughput clustering where two 50GBase-X ports are required. It is not for systems that only offer smaller PCIe slots or that lack the firmware support needed for this adapter. Buyers who need a different port count or a lower-speed interface should select another model.

PCI Express 3.0 x16 interface requirement

The single specification that decides fitment is the PCI Express 3.0 x16 interface; the host must provide a full electrical x16 slot running at Gen 3.0 speed. Without that slot the card cannot operate at its rated 50GBase-X performance.

How it compares

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

Price $169.99
Pricier than about 64% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameLenovo
Model nameQL45212
Performance
Rated speed50GBase-X
Ports & slots
Interface typePCI Express 3.0 x16

Questions about this item

Which speed version of the Lenovo QL45212 should I choose for my server?

The adapter operates at 50GBase-X, so select this model when your network fabric requires 50 Gb/s per port.

What does the 50GBase-X rating mean once the card is installed in a PCIe 3.0 x16 slot?

Each of the two ports can deliver up to 50 Gb/s, and the x16 lane width provides enough host bandwidth to sustain that rate.

How does the PCI Express 3.0 x16 interface limit real-world throughput?

The x16 electrical connection supports roughly 16 GT/s per lane, giving ample headroom so the dual 50 Gb/s ports are not bottlenecked by the bus.

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