xhc-hb04 does not communicate

Good morning, I bought an xhc-hb04 because mine had fallen and the wheel didn't turn well, but it still works. When the new one arrived, I immediately noticed that it stays on even when the PC is off, which the old one didn't. It's detected because if I remove the LinuxCNC dongle, it gives me an error. The working one has a chrome power button, while the new one has a plastic button. I think it's defective. What do you think?