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Small black USB 3.0 dongle with RJ45 port and LED indicator

SMUGDESK

SMUGDESK USB 3.0 to RJ45 2.5G Ethernet Adapter RTL8156

SKU CH-VVNR-KR6Q4

Adds a 2.5G RJ45 port via USB 3.0 with RTL8156 chip for 2500Mbps wired speeds

  • Up to 2.5 Gbps wired throughput via RTL8156 chip
  • USB 3.0 port with USB 2.0 fallback for broad device support
  • Auto-negotiates 10, 100, 1000 and 2500 Mbps on CAT5e or CAT6
  • Works with Windows 7, 8, 10 and MacBook out of the box
  • Compact dongle with LED status lights for instant link verification

USB 3.0 to 2.5G Ethernet Adapter

This compact external dongle adds a 2.5G RJ45 port to laptops and ultrabooks that lack native highspeed wired networking. It uses the RTL8156 controller to deliver up to 2500Mbps throughput for large file transfers and streaming. The adapter suits Windows 7, 8, 10 and MacBook systems with a simple plugandplay setup.

USB 3.0 Interface Limits

The USB 3.0 connection provides the necessary bandwidth for 2.5G speeds while remaining backward compatible with USB 2.0 ports. On USB 2.0 the link will negotiate down to 1000Mbps or lower, so full 2500Mbps performance requires a USB 3.0 host port. Autonegotiation supports 10, 100, 1000 and 2500Mbps rates with standard CAT5e or CAT6 cabling.

PlugandPlay Installation

Most supported operating systems recognise the adapter immediately without driver installation. The builtin LED indicates link status and data activity for quick verification. Ensure the host USB port supplies adequate power for stable operation and use quality CAT5e or CAT6 cables to avoid negotiation failures at 2.5G speeds.

Highlights

  • Up to 2.5 Gbps wired throughput via RTL8156 chip
  • USB 3.0 port with USB 2.0 fallback for broad device support
  • Auto-negotiates 10, 100, 1000 and 2500 Mbps on CAT5e or CAT6
  • Works with Windows 7, 8, 10 and MacBook out of the box
  • Compact dongle with LED status lights for instant link verification

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick this adapter or a standard 1 Gbps model?

Choose this 2.5 Gbps adapter if your router, switch or NAS supports 2.5 GbE and you use CAT5e or CAT6 cabling; otherwise a 1 Gbps model is sufficient.

Will I actually see 2500 Mbps on my laptop?

Real-world throughput reaches 2.5 Gbps only when the host USB 3.0 port, the network switch and the cabling all support 2.5 GbE; on USB 2.0 it falls back to 10/100/1000 Mbps.

Does USB 3.0 limit the 2.5G Ethernet speed?

USB 3.0 provides enough bandwidth for the RTL8156 to run at the full 2500 Mbps rate, while USB 2.0 caps the link at 1000 Mbps maximum.

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