The SFP-3G31DT-20 modules did everything that I expected for a great price. I would definitely purchase again in the future.

Have tested both in my digital video routers and switches, and works fine.

EVERYTHING that has to do with FS.COM has always been easy, fair, and quick. I love the fact that when I make a purchase I can get help from my Account Manager every single time. which is why I stick with FS.COM no matter what!