(I use various USB C -> USB A cables) I just received and tested this product, I have a throughput of : - USB 2.0 port -> 17.5 Mb/s - USB 3.2 Gen1 port -> 22.4 Mb/s (write speeds) If I use the same hard drives, connected to an old Digitus USB 3.0 I get 44 MB/s with the same data. Tests on AOREUS x570 motherboard + various SATA III hard drives all gave the same results. Hypothesis: 1) I don't have the right USB C - USB A cable in this case which one to buy from you? 2) Hardware compatibility not switching to 3.0 ? but to 2.0 ? 3) The manufacturer announces a restricted bandwidth or simply a half lie (deception)? This is one of the worst accessories I've ever bought...in 30 years.laborious assembly, not much "Service Freundlich" and the worst, the power supply connection on the side of the device and not on the back! You have to leave a space of 3-4 cm next to another device on a shelf for example :( Also, angry with Digitec. Is it becoming standard to have a European 220V plug? PS: the product (packaging etc) was obviously not new when I received the goods.