RTL8126 5Gbps Base-T PCIe Ethernet Card RJ45 Port NIC Desktop Adapter Windows PC

Product Features1. Realtek RTL8126 5GbE ControllerAdopts the reliable Realtek RTL8126 multi-gigabit chip, delivering steady 5G wired performance for NAS, content creation workstations and gaming PCs, built to handle long-duration heavy data transmission.2. Efficient Passive Cooling DesignEquipped with an aluminum heatsink for passive heat dissipation. Preventing thermal throttling even under continuous high-speed file transfer workloads.3. Flexible Installation & Wide CompatibilityPCIe 3.0 x1 interface, compatible with all PCIe x1/x4/x8/x16 slots. It includes both full-height and low-profile brackets to fit regular ATX towers and compact SFF mini chassis. Built-in LED indicators help you quickly check network link status.Product Description

Upgrade your desktop PC with this RTL8126-based 5G Base-T PCIe network adapter for blazingly fast wired network speeds. It supports auto-negotiation at 5Gbps, 2.5Gbps, 1Gbps and 100Mbps over standard RJ45 copper cables, making it ideal for NAS storage access, large file transfers, video editing and online gaming.

Fitted with a solid metal heatsink, it keeps the chip cool and maintains stable performance during prolonged, heavy-load tasks. Both full-height and low-profile brackets are included, making it suitable for standard ATX towers and compact SFF (small form factor) computers.

Product Features

1. Realtek RTL8126 5GbE Controller

Adopts the reliable Realtek RTL8126 multi-gigabit chip, delivering steady 5G wired performance for NAS, content creation workstations and gaming PCs, built to handle long-duration heavy data transmission.

2. NBASE-T Multi-Speed Auto Negotiation

Supports automatic speed switching of 5Gbps/2.5Gbps/1Gbps/100Mbps. Works with existing Cat5e/Cat6 copper cables, automatically matches the maximum speed supported by your router, switch or NAS device.

3. Efficient Passive Cooling Design

Equipped with an aluminum heatsink for passive heat dissipation. Preventing thermal throttling even under continuous high-speed file transfer workloads.

4. Flexible Installation & Wide Compatibility

PCIe 3.0 x1 interface, compatible with all PCIe x1/x4/x8/x16 slots. It includes both full-height and low-profile brackets to fit regular ATX towers and compact SFF mini chassis. Built-in LED indicators help you quickly check network link status.

5. Smooth Driver Support for Windows

Optimized for Windows 10 and Windows 11. Install the official driver to activate the full 5Gbps bandwidth, simple setup for PC DIY builders.

Package Includes

1 × 5G PCIe Ethernet Card
1 × Low Profile Bracket
Mounting Screws

Notes

Please install the official driver after hardware installation for full 5G speed. Cat5e or better network cable is required for 5G / 2.5G connection.