This product is a 5V version with a shell (the color of the product shell is sent randomly, no specified colors accepted) Use USB ASP to burn AT89S51 AT89S52, please power the small system separately through the DC jack, otherwise it cannot be burned. No need to install the driver, after plugging it into the computer USB port, the computer automatically identify the ergonomic input device, and then automatically drive the downloader. The lower right corner of the computer prompts that the device can be used, and the red indicator light is on. When burning the program, the green indicator light is on. Support WIN2K, WINXP, VISTA, WIN7 and other operating systems. Must use progisp1.6 and above versions of the host computer software. Powered by USB port, 500mA recoverable fuse, short circuit overcurrent protection, the target board can also be shared with USB at the same time. Supports burning of s51 and AVR chips, faster and more stable than parallel port ISP, and is a good choice for and computers without parallel port (3.3V version cannot support burning of S51, S51 series 3.3V cannot be downloaded). Adopting the version of stable firmware, no hardware jumper selection is required for low-speed download, faster download speed and more stable. Use standard IDC10 interface. Normal programming steps: in programming data, select fuse position, connect the target board, click automatic, wait for the download programmer indicator to light green, and select the corresponding button to operate. (During operation, the working status of the download equipment can be judged according to the color change of the indicator light). AT89S51 and S52 series pins and download line connection definition: MOSI --P1.5 --P1.6 --P1.7 RES -- GND --GND 5V --VCC Colour: Random colors, no specified colors accepted Material: Plastic + Metal Note: