1. Are you using a card reader or convertor such as the MicroSD-to-SD convertor or USB card reader to copy SD/MSD/CF…etc? The quality of the convertor and card reader could be unstable, please try using another brand of card reader. If you need to do a mass copy task, we strongly suggest that you select our professional Flash duplicator. For example, if you need to copy large quantities of MicroSD card, you can try our MicroSD or Combo Flash duplicator. This professional Flash duplicator can highly increase the performance and reduce the risk of mistakes. Please feel free to contact us. We will be more than happy to provide the best solution.
2. Are you using ultra-slim/non-standard USB?If you are using ultra-slim USB, we suggest you to buy a USB extension cable. The connector for the USB extension cable, which is more compact, can solve the issue of USB not being detected.
3. Are you using multi-device?We can not support multi-device Flash media.A multi-slot, including "all-in-one", card reader is considered a multi-device if multiple memory cards can be accessed under corresponding drive and all drive letters appear simultaneously; for example,USB+MicroS.