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3–Port Portable USB 3.0 Hub
with Gigabit Ethernet Adapter NIC – Aluminum Casing

Mac / PC / Linux / USB 3.0 / Ethernet
Expand Your Connectivity
Add more ports via a single connection
The ST3300GU3B Portable USB 3.0 Hub features an integrated GbE port, enabling you to expand your laptop connectivity by adding three external USB 3.0 ports, as well as a Gigabit network port via a single USB 3.0 connection.
Gigabit network support and USB 3.0 hub all in one
The hub merges Gigabit network support and USB 3.0 hub access into lightweight yet sturdy aluminum casing, providing vital connectivity ports that are often limited or nonexistent on modern mobile computers, while remaining compact and travel–friendly. Plus, with an attached USB 3.0 host connection cable there's no need to carry a separate cable with you, so you can tuck the hub neatly into your laptop bag for maximum portability.
Faster connections
For faster and more consistent network connections, the integrated Ethernet port leverages the 5 Gbps capabilities of the USB 3.0 interface to provide wired Gigabit access that is fully compatible with IEEE 802.3/u/ab standards.
Low–power and portable
An ideal laptop accessory, this mobile USB hub is great for connecting low-power peripherals like a mouse, keyboard or USB flash drive, and also includes a universal power adapter for connecting devices such as external hard drive enclosures.

Product Specifications:

StarTech Part Number

  • ST3300GU3B


  • 1 x type-A (male) USB 3.0 connector
  • 3 x type-A (female) USB 3.0 ports
  • 1 x Gigabit port

Max Data Rate1

  • Up to 2 Gbps (Gigabit port)
  • Up to 5 Gbps (USB port)


  • IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az
  • USB 3.0, USB 2.0, USB 1.1

Chipset ID

  • ASIX– AX88179 (LAN)
  • Genesys Logic– GL3522 (USB 3.0 Hub)


  • Supported

Full Duplex

  • Supported


  • Center Tip Polarity– Positive
  • Input Current– 300mA
  • Input Voltage– 100–240AC
  • Output Current– 2A
  • Output Voltage– 5DC
  • Power Source– AC Adapter


  • LED– Link
  • LED– Activity

OS Supported

  • Mac OS X 10.6 and later (Mac OS X 10.10 compatible)
  • Windows 8, 8.1, 7, Vista, XP (32/64bit)
  • Linux 2.6.x and later (Tested up to 3.17)

Operating Temperature

  • 0°C – 50°C (32°F – 122°F)

Storage Temperature

  • -10°C – 75°C (14°F – 167°F)

Operating Humidity

  • 0~85% RH (Non–Condensing)


  • Black

Enclosure Type

  • Aluminum

Cable Length

  • 5.8" (148mm)


  • 3.4" x 1.7" x 0.6" (87 x 43 x 14 mm)


  • 2.2oz (62g)


  1. If connected to a USB 2.0 host port, performance may be limited.
Manufacturer provided specifications for StarTech p/n ST3300GU3B UPC#: 065030858304



Included Items
  • StarTech 3–Port Portable USB 3.0 Hub with Gigabit Ethernet Adapter NIC – Aluminum Casing
  • Universal power adapter (NA/UK/EU)
  • Driver CD
  • Instruction Manual
StarTech 3–Port Portable USB 3.0 Hub with Gigabit Ethernet Adapter NIC – Aluminum Casing Mfr P/N: ST3300GU3B OWC SKU: STRST3300GU3B Add 3 external USB 3.0 ports with UASP and a Gigabit Ethernet port to your system. Features an aluminum case. StarTech 2 Year Limited Warranty Sold Out