You've got fiber in the wall and a switch that speaks 10G, but your endpoint only has an RJ45 port. The MC420L sits between them and auto-negotiates anywhere from 1G to 10G so you're not stuck on a single speed. One RJ45 port handles 1G, 2.5G, 5G, or 10G with Auto-MDI/MDIX, so cable orientation doesn't matter. The FX port is hot-swappable – drop in the SFP that matches your fiber run and you're connected. Complies with IEEE 802.3an, 802.3ae, and 802.3aq. Carries a 3-year warranty. When your next 10G link needs to go live this week, this is the piece that makes it happen. Add to cart