Thanks for you attention br MB SD Connect Compact 4 support reading out & erasing trouble code,reading the real-time data of sensor and actuator, coding and programming. Also support wireless diagnose, support K line,CAN BUS and UDS protocol, with multi-language. br 1. New MB SD Connect Compact 4 Star Diagnosis support wireless diagnose; br 2. New MB SD Connect Compact 4 Star Diagnosis not only support K line 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; br 3. Multiplexer now use Lan cable to connect, can fit Only application to DELL computer and ThinkPad computer br 4. Connector adopt Military quick swap technology, it can support 10,000 times pull plug, more stable; br 5.