VMG1312-T20B 4G



We have a number of VMG1312-T20B routers where the users would like a 4g backup. Most of our users already have a Huawei E3372 dongles and when inserted they don't seem to be detected. I have found it difficult to get any information on 4g usb devices for the unit and can't even find if there is a firmware Upgrade WWAN Package but these model dongle have been about for years.

Can anyone advise as don't seem to be able to get access to any Zyxel support.

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