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Allied Telesis AT-2911SX PCI-Express network card with LC fibre port

Allied Telesis

Allied Telesis AT-2911SX/LC-901 network card 1000Mbps PCI-Express

SKU CH-QQXW-8CGW2 MPN AT-2911SX/LC-901

A 1000Mbps PCI-Express network card with one 1000Base-SX port and jumbo frame support up to 9000 bytes

  • Speed1000Mbps
  • InterfacePCI-Express
  • FeaturesProduct Type:Gigabit Ethernet Card
  • Weight0.2
  • Gigabit throughput for high-speed networking
  • PCI Express x1 slot fits modern motherboards
  • Single 1000Base-SX fibre port simplifies cabling
  • Jumbo frames up to 9000 bytes reduce packet overhead
  • RoHS certified and 2.08 oz for eco-friendly deployment

Allied Telesis AT-2911SX Gigabit PCIe Adapter

The Allied Telesis AT-2911SX is a Gigabit Ethernet network card designed for a PCI Express x1 slot. It provides a single 1000Base-SX fibre port using an LC connector for high-speed wired connectivity. This plug-in card suits servers or workstations requiring a dedicated fibre uplink. It operates within standard low-profile dimensions of 2.7 inches by 3.6 inches.

Fits a PCIe x1 slot with low-profile clearance

Installation requires one free PCI Express x1 lane and a compatible LC duplex fibre patch cable for the 1000Base-SX link. The compact 2.7 by 3.6 inch form factor fits low-profile brackets, freeing larger slots for other expansion cards. RoHS compliance confirms the card meets restricted substance directives for regulated environments. No external power connection is needed beyond the slot.

Jumbo frame support up to 9000 bytes

The adapter handles jumbo frames up to 9000 bytes, well above the standard 1548 byte Ethernet limit. This reduces CPU overhead and latency when moving large, time-critical data blocks across the network. Driver software manages the larger packet buffers automatically once enabled in the operating system. The feature benefits storage replication, backup streams and high-throughput applications.

Highlights

  • Gigabit throughput for high-speed networking
  • PCI Express x1 slot fits modern motherboards
  • Single 1000Base-SX fibre port simplifies cabling
  • Jumbo frames up to 9000 bytes reduce packet overhead
  • RoHS certified and 2.08 oz for eco-friendly deployment

Specifications

BrandAllied Telesis
ModelAT-2911SX
Speed1000Mbps
InterfacePCI-Express
FeaturesProduct Type:Gigabit Ethernet Card
Weight0.2
Shipping weight0.45 kg
Package size229 × 152 × 25 mm

Questions about this item

At what packet size does the AT-2911SX/LC-901 start rejecting frames as errors under sustained load?

Standard Ethernet packets are limited to 1548 bytes; anything larger is rejected unless jumbo frame support is enabled on the switch and driver.

How much heat and power should I expect from this single-port 1000Base-SX card when it runs continuously?

The low-profile PCIe x1 adapter draws minimal power and produces negligible heat; no active cooling is fitted and typical operation stays well within slot limits.

Which fibre patch cable and switch port must I already have for this LC-connector card to link up?

You need a duplex LC multimode patch cord and a 1000Base-SX SFP or fixed port on the switch side; the card itself has the LC transceiver built in.

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