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This User Manual covers setup, features, compatibility, and specifications for the Satechi 108W Pro USB-C PD Desktop Charger (ST-TC108WM).

What's In The Box

108W Pro USB-C PD Desktop Charger, power cable, User Manual. (Charging cables sold separately.)

Product Overview

This desktop charger runs a laptop and three smaller devices from one outlet: a 90W USB-C Power Delivery port for a MacBook or Windows laptop, an 18W USB-C port for a phone or tablet, and two USB-A ports for accessories. The two USB-C ports deliver their full 90W and 18W at the same time without slowing each other down, and both support Quick Charge 3.0 as well as USB-C PD. It sits on a desk rather than plugging into the wall directly, so the outlet stays uncluttered and the charger stays within reach.

Setup

The charger is plug and play: no drivers or software required.

1. Connect the charger to a power outlet: Connect the included power cable to the 2-pin power connector on the charger, then plug the cable into a wall outlet.
2. Connect your devices: Plug your charging cables into the USB-C and USB-A ports and connect your devices. Charging begins automatically.

Functions

Parts labeled diagram of the 108W Pro USB-C PD Desktop Charger with 6 labeled components.

1. 2-Pin Power Connector: The two-pin inlet on the side of the charger where the power cable connects. It is the only power input; every other port is an output.
2. Power Cable (included): The detachable cable that runs from the 2-pin power connector to a wall outlet.
3. LED Indicator: The light bar on the top face, which shows the charger is receiving power.
4. USB-C Charging Port (90W Max.): The high-power USB-C Power Delivery port for laptops. Supports PD at 5V/9V/12V/15V up to 3A and 20V up to 4.5A, and Quick Charge 3.0 at 3.6V to 6V up to 3A, 6V to 9V up to 2A, and 9V to 12V up to 1.5A.
5. USB-C Charging Port (18W Max.): The second USB-C Power Delivery port, for phones and tablets. Supports PD at 5V up to 3A, 9V up to 2A, 12V up to 1.5A, and 15V up to 1.2A, and Quick Charge 3.0 at 3.6V to 6V up to 3A, 6V to 9V up to 2A, and 9V to 12V up to 1.5A. It will not charge a laptop at full speed.
6. 2x USB-A Charging Ports (Total 12W Max.): Two USB-A ports rated 2.4A max, sharing 12W in total between them, for accessories such as earbuds, watches, and battery packs. They do not support USB-C Power Delivery.

Features

- 90W USB-C Power Delivery port for laptops, plus an 18W USB-C port for phones and tablets.
- The two USB-C ports deliver 90W and 18W at the same time without power sharing between them.
- Two USB-A ports sharing up to 12W for accessories.
- Quick Charge 3.0 supported on both USB-C ports alongside USB-C PD.
- Charges up to four devices at once from a single outlet.
- Detachable power cable included; sits on the desk instead of blocking the outlet.

Important Limitations

Use the original or a certified cable: For the fastest and safest charge, please use the original device cable or a certified one.

Keep away from liquids: Keep away from water, liquid, and moisture.

USB-A ports share 12W: The two USB-A ports share up to 12W in total, so charging two devices from them splits that budget. They are intended for accessories, not laptops.

Not a power bank: The charger has no internal battery and only works while plugged into a wall outlet.

Specifications

Model: ST-TC108WM
Dimensions: 4.75 x 1.19 x 3.13 in (12.06 x 3.02 x 7.95 cm)
Weight: 14.7 oz
Total Output: Up to 108W
Power Cable: Detachable, 2-pin connector, included
Ports & Speeds:
1x USB-C PD: up to 90W (PD 5V/9V/12V/15V at 3A, 20V at 4.5A; QC3.0 3.6V to 6V at 3A, 6V to 9V at 2A, 9V to 12V at 1.5A)
1x USB-C PD: up to 18W (PD 5V at 3A, 9V at 2A, 12V at 1.5A, 15V at 1.2A; QC3.0 3.6V to 6V at 3A, 6V to 9V at 2A, 9V to 12V at 1.5A)
2x USB-A: 2.4A max, up to 12W total shared

Certifications

FCC, CE, WEEE, CAN ICES-003 (B)/NMB-003(B)