Working with ZET 7070 as COM port

(Windows)

Go to Device Manager → USB Controller, and select the required device. In this case, it will be ZETSENSOR USB (Figure 20); open its properties and on the Advanced tab check “Load VCP” (Figure 1).

Диспетчер устройств. Контроллер USB
Figure 1

Свойства ZETSENSOR USB
Figure 2

Then, turn off the controller/interface converter and connect it to the PC again.