Tek Republic TUN-300 USB 3.0 Gigabit Ethernet Network Adapter


1. Gigabit Ethernet at USB 3.0 Speed
2. Supports 10/100/1000 with auto-sensing IEEE 802.3, 802.3u and 802.3ab (10BASE-T, 100BASE-TX, and 1000BASE-T)
3. Crossover Detection & Auto-Correction (Auto MDIX)
4. Light weight & Portable
5. ASIX AX88179 Chipset

User Manual
Windows Driver / Mac driver

Collections: USB Networking, Workstation

The Tek Republic TUN-300 USB 3.0 Gigabit network adapter adds a RJ45 Ethernet port to any USB-enabled PC. The USB 3.0 maximizes network access speeds and provides up to 5GBps at USB 3.0 bus levels. The TUN-300 is a compact USB 3.0 network adapter that is backwards compatible with older USB 2.0/1.x computer systems (speed limited by USB bus), which makes it the ideal portable replacement network adapter. Also, with support for features such as Jumbo Frames, VLAN tagging and Wake on LAN (WOL), the adapter is a versatile Gigabit network solution for home and business users alike.

Supports 10/100/1000 with auto-sensing IEEE 802.3, 802.3u and 802.3ab

Supports full duplex operation with IEEE 802.3x flow control and half duplex operation with back-pressure flow control; Supports 10/100/1000 with auto-sensing (IEEE 802.3, 802.3u, and 802.3ab)

USB 3.0 Performance

Leveraging the blazing speeds of USB 3.0 up to 5Gbps (up to 10 times faster than USB 2.0) for Gigabit Ethernet network connectivity to a laptop or desktop. Backwards compatible with USB 2.0/1.1.

Slim Light Weight & Portable

Slim and compact design for easy fit with any laptop or bag. The built-in 4" cable is a perfect for any laptop/tablet user.


Connectors 1 x RJ45 (Gigabit Ethernet) and 1 x USB 3.0 A male
Chipset ID ASIX AX88179
Data Transfer Speed 5Gbps, 480 / 12 / 1.5Mbps
Compatible Networks 10/100/1000Mbps - IEEE 802.3i, IEEE 802.3u, IEEE 802.3ab, and IEEE 802.3az
Auto MDIX Yes
Full Duplex Support Yes
LED Indicators Activity (Yellow) Link (Green)
Operating System Support Windows 10 / 8 / 7 and Mac OS X v10.6 or later
Dimensions 2.64 x 1.02 x 0.61"
Weight 1.2 oz

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