RTL8213B-CG Datasheet 10/100/1000M Copper to 100Base-FX/1000Base-X Fiber Media Converter Rev. 1.0 30 Dec. 2018 The RTL8213B-CG is a QFN40, high-performance media converter featuring low-power integrated 1-port Giga-PHY that support 1000Base-T, 100Base-TX, and 10Base-T.