• Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet
  • Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet
  • Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet
  • Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet
  • Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet
  • Startech ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet ST3300GU3B 3-Port Portable USB3.0 Hub Plus Ethernet

SKU: CST235, ST3300GU3B

$102.72 $95.63

7 in stock

Price Match

Estimated delivery time for items in stock:

  • AUCKLAND1 DayShipping $ 9.20
  • NORTH ISLAND1-2 DaysShipping $ 9.20
  • SOUTH ISLAND1-3 DaysShipping $ 9.20

Can ship same day if order before 2pm (except weekends and public holidays)

SKU: CST235, ST3300GU3B Categories: , , Tag:
  • TAA Compliant
  • Provides three USB 3.0 hub ports, with support for up to 5 Gbps
  • Gigabit Ethernet port (RJ45) with Wake-on-LAN (WOL) support
  • Aluminum casing with a compact, slim, and lightweight design for maximum portability
  • Dongle-style combination adapter with built-in USB 3.0 cable
  • IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az compatible
  • Supports 10/100/1000 Mbps half and full-duplex operation
  • Backward compatible with USB 2.0 and 1.x devices
  • Universal Power Adapter (NA/UK/EU) included

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Product Overview

Startech ST3300GU3B 3-Port Portable USB 3.0 Hub plus Ethernet

Gallery Image 1 for ST3300GU3B

Startech ST3300GU3B Description

Startech ST3300GU3B Portable USB 3.0 Hub is TAA compliant 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. This hub is an ideal laptop accessory for your Microsoft Surface™ Pro 4, Surface Pro 3, Surface Book, Dell™ XPS 13, and many other devices.

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.

For faster and more consistent network connections, the integrated Ethernet port leverages the 5Gbps capabilities of the USB 3.0 interface to provide wired Gigabit access that is fully compatible with IEEE 802.3/u/ab standards. Plus, the GbE port supports Wake-on-LAN (WOL), so you can remotely wake your computer over your network.

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.

Backed by a 2-year warranty and free lifetime technical support.


  • Work from your Ultrabook, laptop or netbook easily while you’re on the run or on the road, the perfect travel accessory with more connectivity options
  • An ideal laptop accessory for Microsoft Surface Pro 4, Surface Pro 3, Surface Book, Dell XPS 13, Dell Latitude 11 5000 Series 2-in-1 and other devices
  • Connect a wide variety of peripherals at home / office to a laptop, all from a single USB 3.0 connection
  • Add Gigabit support to your laptop for use in boardrooms, hotels, classrooms, offices, or home environments
  • Replace a failed built-in Ethernet port on a laptop, or upgrade to 1000 Mbps Gigabit connectivity

Technical Specifications

Warranty InformationWarranty2 Years
Connector(s)3 – Connector Type(s)USB Type-A (9 pin) USB 3.0 (5 Gbps)
1 – Connector Type(s)RJ-45
USB Type-A (9 pin) USB 3.0 (5 Gbps)
EnvironmentalOperating Temperature0°C to 50°C (32°F to 122°F)
Storage Temperature-10°C to 75°C (14°F to 167°F)
Humidity0~85% RH (Non-Condensing)
HardwareUSB-C Device Port(s)No
USB-C Host ConnectionNo
Fast-Charge Port(s)No
InterfaceUSB 3.0
USB 3.1 Gen 1
RJ45 (Gigabit Ethernet)
Bus TypeUSB 3.0
Industry StandardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
IEEE 802.3az Energy-Efficient Ethernet, IEEE 802.3x Flow Control, 802.1q VLAN Tagging, 802.1p Layer 2 Priority Encoding
USB 3.0 – Backward compatible with USB 2.0 and 1.1
Chipset IDGenesys Logic – GL3522
ASIX – AX88179
Indicators1 – LED IndicatorsLink
Packaging InformationPackage Height2.1 in [53 mm]
Package Length6.0 in [1.5 cm]
Shipping (Package) Weight13.2 oz [374 g]
Package Width8.5 in [2.2 cm]
Package Quantity1
PerformanceMaximum Data Transfer Rate5 Gbps (USB 3.0)
2 Gbps (Ethernet; Full-Duplex)
Type and RateUSB 3.0 – 5 Gbit/s
Flow ControlFull duplex flow control
Compatible Networks10/100/1000 Mbps
Auto MDIXYes
Full Duplex SupportYes
Jumbo Frame Support4K max.
Physical CharacteristicsForm FactorCompact
Weight of Product2.2 oz [62 g]
Cable Length5.8 in [1.5 cm]
Product Length3.4 in [87 mm]
Product Width1.7 in [43 mm]
Product Height0.6 in [14 mm]
PowerPower SourceAC Adapter Included
Input Voltage100 – 240 AC
Input Current300 mA
Output Voltage5 DC
Output Current2 A
Center Tip PolarityPositive
Plug TypeH
Power Consumption (In Watts)10
SoftwareOS CompatibilityWindows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
Mac OS® 10.6 to 10.15
Chrome OS™
Linux 2.6.x to 4.11.x LTS versions only
Special Notes / RequirementsSystem and Cable RequirementsAvailable USB 3.0 port
NoteIf connected to a USB 2.0 host port, performance may be limited
What’s in the Box1 – Included in PackageAluminum USB 3.0 Hub w/ GbE Adapter
Universal Power Adapter (NA/JP, EU, UK, ANZ)
Driver CD
Instruction Manual

Additional Details

Product Manufactured by: Startech

Product Found in: Ethernet Adapters

Cackle Part Number: CST235

Manufacturer Part Number: ST3300GU3B


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