SKU: NU405C

Simplecom NU405C SuperSpeed USB-C and USB-A to 2.5G Ethernet Network Adapter 2.5Gbps LAN

Regular price $29
Tax included Shipping calculated at checkout.

Delivery and Shipping

We deliver Australia-wide with reliable couriers. Delivery times vary by location.

In store pick up available 7-days a week. Give us a call to check availability and schedule your collection.

Need it fast or have any questions? Get in touch — we’re happy to help.

Description

The Simplecom NU405C is a compact, plug‑and‑play USB-C and USB‑A to 2.5G Ethernet adapter that instantly upgrades any compatible device to high‑speed wired networking. With a single, short connection, you can unlock up to 2.5Gbps over a standard RJ‑45 port, making it ideal for fast file transfers, NAS access, and bandwidth‑hungry apps on the go.

  • Hybrid USB-C / USB-A connector: The adapter is designed for both USB‑C and USB‑A hosts, letting you pair it with a wide range of laptops, desktops, and tablets without carrying extra dongles.
  • 2.5GBASE‑T accuracy: RJ‑45 supports up to 2.5 Gbps, delivering a substantial speed boost over traditional gigabit Ethernet. It remains backward compatible with 100 Mbps and 1 Gbps networks, so you’ll still work smoothly on older hardware.
  • USB 3.2 Gen 1 interface: Built on USB 3.2 Gen 1 (USB 3.0) to provide reliable throughput, with auto‑negotiation and Auto MDIX for hassle‑free connections. A compact, 10 cm cable keeps your desk tidy.
  • Bus‑powered, no extra power needed: The NU405C draws power from the USB port, so there’s no external power adapter to manage—great for travel and slim workstations.
  • Broad OS compatibility: Designed for broad compatibility with Windows, macOS, and ChromeOS devices (typical support includes Windows 7 and above, macOS 10.10 and above, ChromeOS).
  • real‑world use cases: Ideal for laptops that lack built‑in 2.5G networking, quick backups to a 2.5G NAS, high‑bitrate media transfers, or studio setups where reliable wired bandwidth matters.

Why this matters: upgrading to 2.5 Gbps doesn’t require replacing your entire network. The NU405C lets you leverage existing 2.5G switches or NAS devices with a single, portable dongle—perfect for remote workers, content creators, and IT setups that demand faster local transfers without a hardware overhaul.

Tips for maximizing performance

  • To sustain 2.5 Gbps, use a Cat6 (or higher) Ethernet cable and connect to a 2.5GBASE‑T capable switch, router, or NAS.
  • Keep the USB connection direct to the host (avoid hubs) for the most stable throughput.
  • If you’re transferring large files, run multiple concurrent transfers to parallelize bandwidth usage and reduce contention on busy networks.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.