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GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller, 5Gbe RJ45 Port NIC Card Support WOL, 5Gb Base-T Ethernet Adapter for Windows10/11/Windows Server/Linux
GigaPlus

GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller

Bottom line: The GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller ($29.59 on Amazon as of 2026-10-06): Realtek RTL8126 controller delivers full 5Gb/s over standard RJ45; main trade-off: PCIe-only card — incompatible with legacy PCI slots.

$29.59

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Buy on Amazon — $29.59 Compare to similar retro networking cards

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Realtek RTL8126 controller delivers full 5Gb/s over standard RJ45
  • ✓ Auto-negotiates 5G/2.5G/1G/100M for backward-compatible drops
  • ✓ Wake-on-LAN support for remote power-on
  • ✓ Ships with full-height and low-profile brackets for slim cases
  • ✓ Broad OS support: Windows 7-11, Windows Server, and Linux

Cons

  • ✗ PCIe-only card — incompatible with legacy PCI slots
  • ✗ Tops out at 5Gb; no 10GbE headroom
  • ✗ Full speed requires a 5GBASE-T switch or router
  • ✗ Occupies a PCIe slot unavailable on many mini-PCs/laptops

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SpecPicks Verdict

SpecPicks scored GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. GigaPlus's retro networking cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro networking cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 🌐5G High Speed: This 5G Ethernet card uses the Realtek RTL8126 controller, which can increase the Ethernet speed to 5Gb/s. Ensure the stability of Internet access and local data transmission, effectively prevent packet loss, and improve server stability. Support network wake-up function.
  • 🌐Network Connection: This 5G BASE-T PCIe is equipped with an independent Ethernet port, which can convert the PCIe slot (X1/X4/X8/16) into a 5G RJ-45 Ethernet port. Note: Only suitable for PCIe ports, not for PCI slots.
  • 🌐Wide Compatibility: Compatible with Windows 7/8/8.1/10/11 and Linux. Seamlessly backward compatible with 5Gbps/2.5Gbps/1Gbps/100Mbps, it can automatically negotiate high-speed and low-speed connections, support multiple device connections, and meet the diverse operating system needs of your data center or home use.
  • 🌐Adaptability and Heat Dissipation: Comes with standard brackets and slim brackets for different applications such as desktops, workstations, servers, and mini-tower computers. Excellent heat dissipation performance can quickly reduce the temperature and keep the stability of network transmission.
  • 🌐Customer Service: Each GigaPlus 5G NIC undergoes rigorous reliability, quality, and performance testing. We provide lifetime technical support for the entire product.

Full Specifications

BrandGigaPlus
Weight5g
Model NumberGP-5G NIC
CompatibilityLinux
Built-In Media5G NIC
Number of Items1
Compatible DevicesDesktop
Data Link ProtocolEthernet
Data Transfer Rate5 Gigabits Per Second
Hardware InterfacePCI Express x8
Warranty Description1 year warranty
🌐Customer ServiceEach GigaPlus 5G NIC undergoes rigorous reliability, quality, and performance testing. We provide lifetime technical support for the entire product.
Full listing titleGiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller, 5Gbe RJ45 Port NIC Card Support WOL, 5Gb Base-T Ethernet Adapter for Windows10/11/Windows Server/Linux

Ready to buy?

GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller, 5Gbe RJ45 Port NIC Card Support WOL, 5Gb Base-T Ethernet Adapter for Windows10/11/Windows Server/Linux is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $29.59

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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GiGaPlus 5Gb PCIe Network Card Realtek RTL8126 Controller, 5Gbe RJ45 Port NIC Card Support WOL, 5Gb Base-T Ethernet Adapter for Windows10/11/Windows Server/Linux
$29.59
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