If your device is not charging through the USB-C to USB-C 100W Charging Cable (ST-TCC2MM, ST-TCC2MB, and ST-TCC2MV), the cause is usually an underpowered adapter, a faulty port, or debris on a connector. This 2 meter cable supports up to 100W of USB Power Delivery (PD), but to reach 100W both the power adapter and the device have to support 100W PD as well, since the cable cannot exceed the wattage supported by either end. Work through the steps below in order.

Steps to fix charging with the USB-C to USB-C 100W Charging Cable

1. Reconnect both ends of the USB-C to USB-C 100W Charging Cable and make sure each plug is seated tightly and correctly oriented.
2. Check that your power adapter is a USB-C Power Delivery (PD) adapter and note its wattage. An underpowered adapter is the most common reason for slow charging or no charging.
3. Confirm the device you are charging supports the wattage you expect. The USB-C to USB-C 100W Charging Cable cannot deliver more power than either the adapter or the device supports.
4. Test a different PD adapter and a different USB-C port to rule out a faulty port on the host device or the adapter.
5. Charge a different device with the same setup to eliminate a fault with the original device.
6. Inspect both ends of the USB-C to USB-C 100W Charging Cable for debris or fraying, and clear anything blocking the connectors.
7. Test the same adapter and device with a different USB-C charging cable to confirm whether the problem is the cable.
8. Install any pending operating system updates, then reconnect the USB-C to USB-C 100W Charging Cable.