Lenco TFT-351 - Manual (Page 33)

This marking indicates that this product should not be disposed with other
household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle it
responsibly to promote the sustainable reuse of material resources.
To return your used device, please use the return and collection systems
or contact the retailer where the product was purchased.
They can take this product for environmental safe recycling.
The USB drive must be connected directly to the unit.
To prevent data loss by interference and transfer,
not use USB extension cords.