NBioAPIERROR_DEVICE_OPEN_FAIL?

[Gladson]

In [3]: import nbio

In [4]: nbio.init()
Out[4]: True

In [5]: nbio.open()
NBioAPIERROR_DEVICE_OPEN_FAIL

$ lsusb 

Bus 001 Device 002: ID 0a86:0100 NITGen Co., Ltd