The MC220L is a media converter designed to convert 1000BASE-SX/LX fiber to 10/100/1000Base-T copper media or vice versa. Designed under IEEE802.3ab 1000Base-T standards, the MC220L communicates with any TP-Link standard gigabit SFP fiber module*.* TP-Link does not maintain a third party SFP module compatibility list and does not guarantee all SFP modules work with this product.