GigaPlus
GigaPlus 2.5Gb PCIe Network Card
Bottom line: The GigaPlus 2.5Gb PCIe Network Card ($19.98 on Amazon as of 2026-10-06): Realtek RTL8125B chip delivers full 2.5Gbps wired throughput; main trade-off: needs a PCIe x1/x4/x8/x16 slot; will not work in legacy PCI slots.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Realtek RTL8125B chip delivers full 2.5Gbps wired throughput
- ✓ Wake on LAN support for remote power-on
- ✓ Driver-free on Windows 10; Win 7-11, Linux and macOS supported
- ✓ Standard and low-profile brackets fit desktops, servers, mini towers
Cons
- ✗ Needs a PCIe x1/x4/x8/x16 slot; will not work in legacy PCI slots
- ✗ Non-Windows systems require a manual Realtek driver download
- ✗ Single RJ45 port; no dual-port or SFP+ option
- ✗ 2.5G speeds require a compatible switch and Cat5e/Cat6 cabling
SpecPicks Verdict
SpecPicks scored GigaPlus 2.5Gb PCIe Network Card 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
- ⭐【Super-fast 2.5Gbps Networking】High up to 2.5x-speed with Realtek RTL8125B chip, much faster data-transfer speeds for gaming, living broadcasts and downloads in bandwidth-demanding tasks.
- ⭐【Complete Compatibility】Seamless backward compatibility for 2.5Gbps/1Gbps/100Mbps, Support Windows11/10/8.1/8/7, MAC OS and Linux, no dirver needed on Windows10, easily download the driver in Realtek official website for other OS.
- ⭐【PCIe to 2.5G RJ45】 This 2.5GBASE-T PCIe Network Adater convers a PCIe slot(X1/X4/X8/16) into a 2.5G RJ45 Ethernet Port. Note: Only work with PCIe slot, not for PCI slot.
- ⭐【Widely Use with Heat Sink】Comes with standard bracket and low-profile-bracket to meet the needs of different cases such as desktop, workstation, server, mini tower computer and so on. Excellent heat dissipation can reduce the temperature quickly and maintain the stability of network transmission.
- ⭐【Customer Service】Each GigaPlus 2.5G NIC has been rigorously tested for reliability, quality, and performance. We provide lifetime technical support for the entire product.
Full Specifications
| Brand | GigaPlus |
|---|---|
| Weight | 2.5g |
| Unit Count | 1 Count |
| Model Number | RTL8125B |
| Compatibility | Mac, Linux |
| Built-In Media | 2.5G NIC |
| Mfr Part Number | 2.5G NIC |
| Number of Items | 1 |
| Number of Packs | 1 |
| Compatible Devices | Desktop |
| Data Link Protocol | Ethernet |
| Data Transfer Rate | 2500 megabits_per_second |
| Hardware Interface | PCI Express x4 |
| Warranty Description | 1 Year Warranty |
| Full listing title | 2.5Gb PCIe Network Card, GiGaPlus 2500Mbps Ethernet Interface Adapter, with Realtek RTL8125B, Wake on LAN, 2.5G NIC Compliant Windows/Linux/MAC OS |
Ready to buy?
2.5Gb PCIe Network Card, GiGaPlus 2500Mbps Ethernet Interface Adapter, with Realtek RTL8125B, Wake on LAN, 2.5G NIC Compliant Windows/Linux/MAC OS 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.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Related Retro Networking Cards
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- How to Build a Windows 98 Retro PC in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Retro Handhelds in 2026 — From $35 to $500
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Best 1440p Gaming GPUs in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
More reviews from the SpecPicks archive
Browse all reviews →- NEEWER 18" vs UBeesize 22" Ring Light for Webcam Streaming (2026)
- Aider vs Cline vs Continue.dev for Local Coding on an RTX 3060 (2026)
- llama.cpp vs vLLM for Single-User Local Chat in 2026: Which Wins on a 12GB GPU?
- How to run Llama 3.1 8B on Apple M4 Max
- Automated Cabinet Lighting With a Raspberry Pi: Build Guide
- Using Claude to Auto-Generate Period-Correct DOSBox-X Configs for 90s PC Games
- Claude Sonnet 5: What Shipped and What It Means for Local Rigs
- Best GPU for a NAS or Homelab Running Local LLMs (2026)
- AMD Ryzen AI Halo Mini PC vs RTX 3060 12GB for Local LLMs
- Best Sim Racing Setup for 2026: Wheels, Shifters and Pedals
- Best 4K Gaming Monitor for the PS5 Pro and PC in 2026
- Best Upgrades for a DDR4 Gaming PC in 2026
- Imaging a 90s IDE Hard Drive with a SATA/IDE-to-USB Adapter: The Retro-PC Data-Rescue Workflow
- IPEX-LLM + Ollama in Docker: Running Local Models on Intel GPUs
- GameSir G7 SE vs DualSense for PC Gaming: Which Controller Wins?
- Ryzen 5 5600G vs Ryzen 7 5700X for a Budget Homelab and Virtualization Box in 2026
- Build a Wall-Mounted Raspberry Pi 4 Arcade Cabinet: 3D-Printed Case, SSD Boot, Real BOM
- Best Storage Upgrades for Older Gaming PCs in 2026
- Building a Local LLM Workstation on a Raspberry Pi 5 + Ryzen 7 5800X Hybrid
- Build a Silent Win98 Retro PC with CompactFlash Storage (2026)
- Intel Arc Pro B70 vs RTX 3060 12GB for Local LLMs
- Imaging Your Big-Box CD-ROM Collection: A CompactFlash + IDE Workflow
- Best $1000 Prime Day Gaming PC: RTX 5060 Ti + 32GB RAM
- Best Sound Card and DAC for Competitive FPS Players in 2026
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090