If your USB-C device is not being detected through the Type-A to Type-C Adapter (ST-TAUCS, ST-TAUCM), the usual cause is a connector that is not fully seated, a USB-A port that is not working, or a device that needs something the adapter does not carry. The Type-A to Type-C Adapter is a simple passive adapter that is fully plug-and-play with no drivers or software, it supports USB 3.0 speeds up to 5 Gbps, and it does not support video output or USB Power Delivery (PD) charging.

How to fix detection problems with the Type-A to Type-C Adapter

1. Push the USB-A end of the Type-A to Type-C Adapter all the way into the USB-A port on your computer, charger, hub, or power bank.
2. Push your USB-C cable or accessory all the way into the USB-C side of the Type-A to Type-C Adapter.
3. Try a different USB-A port on the same computer or hub. A single dead or low powered port is a common cause.
4. Do not install drivers or software. The Type-A to Type-C Adapter works immediately, so no setup is needed.
5. Check whether the connected device shows up in System Information under USB on a Mac, or in Device Manager on Windows.
6. Plug your USB-C device straight into a computer without the Type-A to Type-C Adapter to confirm the device itself works.
7. Try a different USB-C cable if your device connects through a cable rather than plugging in directly.
8. Check what you are trying to connect. The Type-A to Type-C Adapter does not support video output or USB Power Delivery (PD) charging, so an external display or a laptop charging cable will not work through it.
9. If the device is a flash drive or hard drive, open Disk Utility on a Mac or Disk Management on Windows to see whether the drive appears but is unformatted.
10. Test the Type-A to Type-C Adapter on a different computer to confirm whether the issue is the adapter or the host device.