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This User Manual covers setup, features, compatibility, and specifications for the Satechi Thunderbolt 4 Dock (ST-UCT4DM).

What's In The Box

Thunderbolt 4 Dock, Thunderbolt 4 USB-C to USB-C cable, 135W power adapter, User Manual.

Functions

1. UHS-II SD Card Reader
2. USB-A 2.0 Port (BC 1.2 Charging)
3. 3.5mm Headphone/Microphone Combo Port
4. Thunderbolt 4 Host Port (PD 96W)
5. LED Indicator
6. Security Lock
7. DC Port (DC IN 20V)
8. 3X Thunderbolt 4 (USB-C)
9. Gigabit Ethernet
10. 3X USB-A 3.2 Gen 2

Product Overview

The Thunderbolt 4 Dock turns a single Thunderbolt 4 connection into a full desktop workstation. It delivers up to 96W of power back to your computer while providing three downstream Thunderbolt 4 ports, Gigabit Ethernet, three USB-A 3.2 Gen 2 data ports, a USB-A 2.0 charging port, a UHS-II SD card reader, and a 3.5mm headphone and microphone combo port. The dock runs on its included 135W power adapter, so connected peripherals draw from the adapter rather than from your computer.

Setup

The Thunderbolt 4 Dock is plug-and-play. No drivers or firmware updates are required.

1. Connect the power adapter. Plug the power cord into a wall outlet, then connect the adapter's barrel plug to the DC input port on the back of the dock.
2. Connect the dock to your computer. Using the included Thunderbolt 4 cable, connect the dock's Thunderbolt 4 host port on the front to a Thunderbolt 4, Thunderbolt 3, or USB4 port on your computer.
3. Connect your devices. Attach displays, drives, network, and peripherals to the dock's remaining ports.

Ports and Features

The dock's ports are split between the front and back panels, numbered below to match the diagram.

Front and back panels of the Thunderbolt 4 Dock with 10 labeled components.

1. UHS-II SD Card Reader: Reads full-size SD cards at UHS-II speeds.

2. USB-A 2.0 Port (BC 1.2 Charging): Powers a connected USB device at up to 7.5W using BC 1.2 charging, and transfers data at USB 2.0 speeds.

3. 3.5mm Headphone/Microphone Combo Port: Single 3.5mm jack for a headset with combined headphone and microphone.

4. Thunderbolt 4 Host Port (PD 96W): Connects the dock to your computer using the included Thunderbolt 4 cable and delivers up to 96W of power to the host.

5. LED Indicator: Indicates that the dock is powered.

6. Security Lock: Two lock slots on the side of the dock for a compatible cable lock.

7. DC Port: Accepts the included 135W power adapter. Labeled DC IN 20V and located on the back panel.

8. 3X Thunderbolt 4 (USB-C): Three downstream Thunderbolt 4 ports, each supporting up to 40 Gbps data transfer and 15W charging.

9. Gigabit Ethernet: RJ45 port for a wired network connection.

10. 3X USB-A 3.2 Gen 2: Three USB-A data ports, each supporting up to 10 Gbps.

Features

• Ten connections from a single Thunderbolt 4 cable
• Up to 96W power delivery back to the host computer
• Three downstream Thunderbolt 4 ports at 40 Gbps with 15W charging each
• Dual display support at 4K 60Hz
• UHS-II SD card reader and 3.5mm headset jack
• Two security lock slots

Important Limitations

Thunderbolt 4 supports up to USB 4 and is compatible with previous versions.

The dock supports up to two external displays at a time, at a maximum resolution of 4K at 60Hz.

Base model Apple M1 and M2 MacBooks are limited to one external display.

Base model M3 MacBook Air and MacBook Pro support two displays at 4K 60Hz only when closed and in clamshell mode.

The Thunderbolt 4 ports output video over USB-C. HDMI displays require a USB-C to HDMI cable or adapter.

A replacement power supply must deliver at least 135W and use a barrel connector measuring 7.4mm outer diameter and 5.1mm inner diameter.

Optimal performance requires a Thunderbolt 4, Thunderbolt 3, or USB4 port on the host computer.

Specifications

Model: ST-UCT4DM
Connector: USB-C (Thunderbolt 4 host port)
Power Input: DC IN 20V, 135W power adapter included
Dimensions & Weight: 19.5 x 8.5 x 3 cm, 422 g
Included Cable Length: 2 ft 8 in (0.8 m)
Ports & Speeds:
1x Thunderbolt 4 host port: PD 96W
3x Thunderbolt 4 (USB-C): up to 40 Gbps, 15W each
3x USB-A 3.2 Gen 2: up to 10 Gbps
1x USB-A 2.0: BC 1.2 charging up to 7.5W
1x Gigabit Ethernet
1x UHS-II SD card reader
1x 3.5mm headphone and microphone combo port
Video Output: Up to two displays at 4K 60Hz

Certifications

FCC, CE, WEEE, EAC, ISED (Industry Canada)