The CH341A Programmer support only support part of 24 / 25 Series BIOS chip on the market (Tips: You can see the BIOS chip models on our website (http://www.keeyees.com/a/Products/ej/36.html) before placing your order). | The SOP8 clip enables in-circuit programming of EEPROM without disassembling the chip, making flashing the BIOS simpler and more efficient. | The main purpose of the CH341A Programmer is to back up, erase, program, calibrate and other actions on various software. | The SOP8 clip support both wide body and narrow body SOP8 chip with 1.27MM Pitch. | Technical Support: Please visit our website (http://www.keeyees.com/a/Products/ej/36.html) to get the tutorial, driver and software. If you cannot get the tutorial, please send us an email via Amazon.