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Green PCB card with four RJ45 ports and a silver heatsink

SMUGDESK

SMUGDESK Quad-Port Gigabit PCIe x1 NIC RTL8111H 4×RJ45

SKU CH-D4WP-Z2VAW

Adds four independent gigabit RJ45 ports through a single PCIe x1 slot using Realtek RTL8111H controllers

  • Four independent gigabit ports from one PCIe slot
  • Four RTL8111H controllers auto-negotiate 10/100/1000Mbps
  • Fits x1/x4/x8/x16 slots preserving high-speed lanes
  • Passive heatsink handles 24/7 multi-port loads
  • Full-height and low-profile brackets suit ATX and SFF cases

Four Independent Gigabit Ports

This SMUGDESK adapter adds four separate RJ45 gigabit Ethernet connections through a single PCI Express x1 slot. Each port is driven by its own Realtek RTL8111H controller and auto-negotiates 10/100/1000Mbps links with standard Cat5e or Cat6 cables. The card includes both full-height and low-profile brackets for ATX or slim chassis.

Soft Router Builds and NAS Aggregation

The four independent controllers suit software router appliances, link aggregation on a NAS, or isolating multiple networks on one host. Passive aluminium cooling and per-port link LEDs support continuous multi-port loads. Buyers who need more than four ports or higher link rates will need a different adapter.

PCIe x1 Lane Footprint

The card operates on a single PCIe lane, so it fits in x1, x4, x8 or x16 slots without consuming premium bandwidth. Hardware checksum offload, 802.1Q VLAN tagging, 9KB jumbo frames, wake-on-LAN and 802.3x flow control reduce host CPU overhead. Compatible with Windows desktop, Windows Server and mainstream Linux distributions.

Highlights

  • Four independent gigabit ports from one PCIe slot
  • Four RTL8111H controllers auto-negotiate 10/100/1000Mbps
  • Fits x1/x4/x8/x16 slots preserving high-speed lanes
  • Passive heatsink handles 24/7 multi-port loads
  • Full-height and low-profile brackets suit ATX and SFF cases

Specifications

No published specifications for this item yet.

Questions about this item

Does the passive heatsink keep the RTL8111H controllers cool during 24/7 multi-port loads?

Yes, the aluminium heatsink is designed for continuous high-load transmission without active cooling.

Which PCIe slot sizes accept this x1 card?

It fits x1, x4, x8 and x16 slots, leaving wider lanes free for other expansion cards.

Can the 9KB Jumbo Frame setting work with my older Cat5e patch cables?

Jumbo Frames are supported, but reliable operation at that size typically requires Cat5e or better cabling throughout the link.

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