On Windows 7 and 8.1 operating systems the Miura driver might not be automatically installed, causing the Miura to show up with status:
The drivers for this device are not installed. (Code 28).
In this case, perform the following steps to manually install the driver:
In the Device Manager, select
Update Driver...
and then
Browse my computer for driver software
Select
Let me pick from a list of device drivers on my computer
>
Show All Devices
>
Browse my computer for driver software
>
Have Disk...
Locate
miura-usb-serial.inf
in the zipped files and the Miura should show up as a working in the Device Manager.