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Green PCB network card with silver RJ45 port and low-profile metal bracket

Roby Technology Co., Limited

Roby Technology Co., Limited 8139 PCIe LAN Card RJ45 Low Profile telephone accessory

SKU CH-1Q3J-6C3BB

Adds a 10/100/1000Mbps RJ45 network port via PCI Express x1 slot with a low-profile bracket for compact cases

  • TypeAdapter
  • SpecificationsPCIe LAN Card
  • FeaturesPCIe Lan Adapter,RJ45,Low Profile
  • Adds a Gigabit Ethernet port via PCIe x1 slot
  • Low-profile bracket fits 2U and small-form-factor cases
  • RTL8111E controller delivers 10/100/1000 Mbps speeds
  • Compatible with Windows 11 down to legacy 98SE systems
  • Works in any PCIe x1, x2, x4, x8 or x16 socket

PCIe Gigabit RJ45 Adapter

This new PCIe LAN card adds a single RJ45 Gigabit Ethernet port through any PCI Express x1, x2, x4, x8 or x16 slot. It uses the RTL8111E controller and includes a low-profile bracket for 2U or small-form-factor chassis. The adapter suits PCs and servers needing a wired network link.

Upgrade from 10/100 Ethernet

The card delivers 1000 Mbps in each direction for a 2000 Mbps aggregate throughput, up to ten times faster than 10/100 Ethernet. The jump is worth it when file transfers, backups or streaming saturate a legacy 100 Mbps link. It fits any PCIe-enabled desktop or server with an open slot.

Sustained Gigabit throughput

The RTL8111E controller maintains line-rate Gigabit speeds under continuous load rather than only in short bursts. Broad OS support from Windows 98SE through Windows 11 ensures driver stability during long transfers. Low-profile brackets keep airflow unobstructed in dense 2U enclosures.

Highlights

  • Adds a Gigabit Ethernet port via PCIe x1 slot
  • Low-profile bracket fits 2U and small-form-factor cases
  • RTL8111E controller delivers 10/100/1000 Mbps speeds
  • Compatible with Windows 11 down to legacy 98SE systems
  • Works in any PCIe x1, x2, x4, x8 or x16 socket

Specifications

BrandRobyTech
Model8139
Part NumberPCIE Ethernet Adapter
TypeAdapter
SpecificationsPCIe LAN Card
FeaturesPCIe Lan Adapter,RJ45,Low Profile

Questions about this item

Will the low-profile bracket fit my 2U server case?

The card ships with a low-profile bracket designed for installation in small HTPC cases and 2U servers.

Which PCIe slot do I use and what driver step is often missed?

Insert the card into any PCIe x1, x2, x4, x8 or x16 slot; the RTL8111E controller needs its driver installed before the RJ45 link will come up.

When should I plan to replace this RTL8111E-based adapter?

Replace the card if the RJ45 port fails, link negotiation drops below 1000 Mbps, or the RTL8111E controller stops being recognised by the OS.

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