I have a Ubiquity Dream Machine Pro and use two ISPs. One of these is my main connection and is used 99% of the time. Since my family works from home and attends classes virtually, I've decided to use a backup ISP. UDM Pro allows you to do this, but has an SFP port. I need this transceiver so that I can use a second WAN connection. This device does what it is supposed to do. If my main internet connection goes down, UDM Pro switches to a second ISP. It can also perform load balancing.
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