MB SD Connect Compact 5 has same function as SD C4 but with new design, support both cars and trucks, support wireless connection. It can Not Only Support K Lline Diagnose and CAN BUS, But Also UDS Diagnose Protocol. Because old MB Star C4 main board do not have UDS chip, so old MB Star C4 can not support it;

Xentry SDconnect C5 Multiplexer can provide complete diagnosis for
the newest hybrid W222. And it has a qualitative improvement in hardware
and software by authorization of diagnostic interface to control the
software.
​Features:

1.  Support Wireless Diagnose
2.  Multiplexer Can Use Lan Cable to Connect
3.  Vehicles Coverage: Support Both Mercedes Benz Cars and Trucks. Cars are Mainly After Year 2000
4.  Support Offline and Online Programming, If You Want to Do Online, Please Buy Online SCN Coding Service
5.  Connector Adopt Military Quick Swap Technology, It Can Support 10,000 Times Pull Plug, More Stable;
​More details, please check on

https://www.autonumen.com/goods-335-MB+SD+Connect+Compact+4+Star+Diagnosis+Tool+Plus+Dell+D630+Laptop+Latest+Version.html