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This Instruction Manual covers setup, operation, and safety information for the Satechi 100W USB-C PD Compact GaN (Gallium Nitride) Charger (ST-TC100GM, ST-TC100GM-AU, ST-TC100GM-EU, ST-TC100GM-UK).

Satechi 100W USB-C PD Compact GaN Charger — front view showing USB-C PD Port A (100W), USB-C PD Port B (100W), and USB-A port (5V/2.4A).

Package Contents

• 1x 100W USB-C PD Compact GaN (Gallium Nitride) Charger
• 1x 2-Pin Power Connector
• 1x Product Manual

Product Overview

The Satechi 100W USB-C PD Compact GaN Charger uses GaN (Gallium Nitride) technology to deliver fast, efficient charging from a compact wall charger. The charger has two USB-C Power Delivery (PD) ports and one USB-A port, and can charge up to three devices simultaneously. Total output adjusts automatically based on connected devices — up to 100W from a single USB-C PD port.

Ports

Port diagram: (1) 2-pin power connector input — back of unit, (2) power cable connection — side, (3) LED indicator — top, (A) USB-C PD Port A — 100W, (B) USB-C PD Port B — 100W, bottom port — USB-A 5V/2.4A.

The 100W USB-C PD Compact GaN Charger has three charging ports on the front face:

• USB-C PD Port A: Delivers up to 100W when used alone. Recommended for laptops and high-power devices.
• USB-C PD Port B: Delivers up to 60W when used alone, or up to 30W when both USB-C PD ports are in use. Supports fast charging for compatible iPhones and iPads.
• USB-A Port: Delivers up to 12W. Use for smartphones, earbuds, and other USB-A devices.

Setup

Step 1: Connect the 2-pin power connector to the back of the charger, then plug into a wall outlet.

1. Connect the 2-pin power connector to the input port on the back of the 100W USB-C PD Compact GaN Charger.
2. Plug the charger into a wall outlet. The charger is compatible with 100–240V outlets worldwide.
3. Connect your USB-C device to one of the USB-C PD ports using a USB-C cable. For full 100W output to a laptop, use an EMark-rated USB-C cable — a cable with an embedded chip that enables safe 100W charging (sold separately).
4. Connect additional devices to the remaining USB-C PD port or the USB-A port as needed.
5. The charger automatically adjusts power distribution based on all connected devices.

Power Distribution

The 100W USB-C PD Compact GaN Charger automatically adjusts output when multiple devices are connected:

• 1 USB-C PD device connected: up to 100W
• 2 USB-C PD devices connected: up to 60W on Port A, 30W on Port B
• 1 USB-C PD + 1 USB-A device connected: up to 90W on USB-C PD, 12W on USB-A
• 2 USB-C PD + 1 USB-A device connected: up to 60W on Port A, 30W on Port B, 12W on USB-A

Charging Tips

• Use USB-IF certified USB-C cables for best performance and safety.
• For maximum laptop charging speed, connect the laptop to Port A with no other devices connected.
• The charger may feel warm during use. This is normal for GaN (Gallium Nitride) technology and does not indicate a defect.
• Disconnect unused devices to maximize power delivery to the primary device.

Safety

• Do not use the charger if the power cord or housing is damaged.
• Keep the charger away from water, liquids, and moisture.
• Do not block ventilation around the charger during use.
• Keep out of reach of children.
• Unplug from the wall when not in use for extended periods.
• Do not attempt to disassemble or modify the charger.