USB Backup Modem

I have Balance 210 with WAN1 and WAN2 connected to 2 separate cable lines working fine. I have an old DSL modem, which has USB connection. I see that the backup port on the Balance has a USB connection but it is called Mobile Internet Backup, clearly designed for the newer LTE modems. Can I use my old USB DSL modem instead? If so, how do I tweak the settings to allow PPoe connection.

Hi Mikey

The USB port on the Pelink series is designed to be connected to a single USB 3G or LTE dongle, unfortunately not another PPPoE device.

You can visit this link to see all the different compatible devices:

very nice post