I'm able to address this problem by tweaking USB port power options. Follow these steps & it should fix your's,
1) Plug in moonlander 2 to the computer.
2) Open device manager on windows machine.
3) Under USB controllers identify the USB port to which the moonlander 2 is connected to.
4) Right click that particular USB port & select the properties.
5) Under the last tab 'Power Management', un-check the option of "Allow the computer to turn off this device to save power".
6) If possible restart the computer & try again. It works for me.
Hope this helps...Happy Mining

In Windows 7, there isn't any Power Management tab in the Device Manager. In the Power Options there doesn't seem to be anything relevant to saving power on USB ports either.