Well Brian, as they say, a picture is worth a 1,000 words;
Top: Sonore’s previous model optical module (non “Deluxe”). Price $395
Bottom: TrendNet Fibre Media converter that provides the same exact function (virtually identical to the TP-Link one). Price $46.99
The TrendNet is better in every single way, from power regulation, to completely discrete Ethernet Magnetics, for basically a tenth the price.
Granted I don’t know what the Sonore “Deluxe” model looks like inside, but based on past experience, I wouldn’t bother 