This product uses a generic USB Display solution for the screen, which is not from an approved or reputable provider. It does not use Synaptics DisplayLink technology, which is the industry standard and certified worldwide. This raises serious concerns about compatibility, driver support, and long-term reliability.
On top of that, the supplier has refused to provide a valid CE certificate in advance and keeps insisting I must buy first. This is highly unprofessional and risky, especially if you plan to sell or use this product in Europe. I strongly recommend verifying all certifications and the actual chipset used before placing any order.