New MB SD Connect star diagnosis focuse on SD C4 PCB chip quality, cable material and wifi card. Star Diagnosis C4 can connect via WIFI or lan cable, more easy to use, No need COM port computer. OBD2Tuning have MB SD Connect Compat 4 Star Diagnosis C4 with Laptop Panasonic CF-19 installed C4 07/2015 Xentry Das software.