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Compact black adapter with Micro-B input, RJ45 port and three USB-A sockets

STARTECH

STARTECH ST3300U3S USB 3.0 Micro-B to Gigabit Ethernet network card with 3 USB 3.0 A ports

SKU CH-H4VE-GNJ3C MPN ST3300U3S

Adds a Gigabit RJ45 port and three USB 3.0 hub ports through one USB 3.0 Micro-B connection

  • Rated speed10/100/1000 Mbit/s
  • Interface type1 - USB 3.0 Micro-B, 3 - USB 3.0 A
  • Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az USB 3.0
  • Connection types1 x RJ45
  • Indicator lights1 - Blue - Power 1 - Green - Network Link (solid) / Activity
  • Temperature range0 °C to 50 °C
  • Add Gigabit Ethernet through a single USB 3.0 Micro-B port
  • Three SuperSpeed USB 3.0 Type-A ports expand peripheral connectivity
  • Wake-on-LAN support enables remote power management
  • Compact 3.6 x 2.6 x .8 inch design fits tight workspaces
  • Supports Windows XP 32/64-bit through Server 2008 R2

Portable Gigabit Ethernet and Hub

The StarTech ST3300U3S combines a 10/100/1000Mbps RJ45 port with three USB 3.0 A ports in a single adapter. It connects to a host through a USB 3.0 Micro-B SuperSpeed interface. The device suits users who need wired networking and extra USB ports on laptops or tablets lacking built-in Ethernet.

Single-Cable Expansion for Thin Clients

One USB 3.0 Micro-B cable carries both network traffic and hub data, freeing the host’s other ports. The package includes a universal power adapter with NA, UK and EU plugs for bus-power relief. Wake-on-LAN support allows remote wake from sleep states across the wired link.

Stable Throughput Under Continuous Load

IEEE 802.3az Energy Efficient Ethernet reduces power draw during sustained transfers. The adapter operates from 0°C to 50°C without active cooling. Link and activity LEDs give immediate visual confirmation of Gigabit negotiation and packet flow during long sessions.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $48.99
Cheaper than about 68% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameStarTech.com
Model nameST3300U3S
Performance
Rated speed10/100/1000 Mbit/s
Connectivity
Supported standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az
USB 3.0 rev. 1.0
Wake on LANYes
Ports & slots
Interface type1 - USB 3.0 Micro-B, 3 - USB 3.0 A
Connection types1 x RJ45
Size & build
Product dimensions3.6 in × 2.6 in × 0.8 in
Product weight1.9 oz [55 g]
Shipping weight0.91 kg
Package size152 × 152 × 53 mm
In the box
In the box1 - USB 3.0 GbE Adapter plus Hub
1 - Micro USB 3.0 Cable
1 - Universal Power Adapter
3 - Power Adapter Plug (NA/ UK/ EU)
1 - Driver CD
1 - Instruction Manual
Environment & compliance
Temperature range0 °C to 50 °C
More details
Indicator lights1 - Blue - Power
1 - Green - Network Link (solid) / Activity (flashing)

Questions about this item

Will the USB 3.0 Micro-B 1.0 link throttle the 1000Mbps Ethernet port under sustained load?

The USB 3.0 Micro-B interface runs at 5Gbps, well above the 1000Mbps Ethernet ceiling, so the network link will not be bottlenecked by the upstream connection.

How hot does the adapter get and is there a fan when it runs all day?

Rated for 0°C to 50°C ambient with no fan; the aluminium casing dissipates heat passively during continuous operation.

Do I need a separate power brick to use the three USB 3.0 A ports and Gigabit Ethernet together?

Yes, the included universal power adapter with NA, UK and EU plugs must be connected for full hub and network operation.

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