1. If you know less of the car computer knowledge and don't like remote assist, we don't recommend you buy this. Teamviewer is just a remote assistant tool to provide technical support for you. Firewall and defender need to be closed in case it damages the software. Please download the teamviewer 15 version if you need remote help. 2. Allow diagnostic for BMW E serials from 1998 2022. Works with INPA, and Progman ISTAD, SSS, and etc. (All functions as in Omitec Interface). Read erase. 3. Work with Windows 7 8 10 32 bits/ 64 bits system. This one cannot support E46 E39 E53, but we have another one with switch can work with E39, E46. E53 can only support engine module. Search this ASIN on : B07CYS77R3 4. Original FTDI 232RL, MCP2551, 9241A, MCP2515, ATMEGA16216AU, ATF16V8B15SU Chip. Most of suppliers in market use fake FTDI or other chip IC which will cause many functions nonwork.