I have tested all models with a Peplink Balance 310 running firmware 7.0.0, except for the E5776 (this model is EOL).
I managed to get a ‘Connected’ status with all models, except for the Huawei E5786.
When using the in-the-box supplied USB cable of the Huawei E5786, the Peplink Balance 310 did not detect a device.
When using a Samsung phone USB cable, I did get a ‘Connecting…’ status, but I did not manage to get a ‘Connected’ status.
So to conclude; the E5330, the E5377, the E5577 and the E5770 work according to my tests.