brand new and high quality Features: Module: 1. Adopts imported atmega8a-au chip on board. 2, With power and write two indicators 3. Self-recovery fuse for onboard 500mA overcurrent for protection. 4. Support 5V and 3.3v power supply for target board. 5. Free drive and latest self-applicable automatic speed regulation 6. Applicable to win8.1/8/7 /XP 32-bit / 64-bit, system computer. This product can be directly connected with the computer USB port, the real USB downloader product, through which it connects to the target board, can download and program the single chip microcomputer easily, especially suitable for notebook computer and desktop computer, and download and debug through the USB port programming. Downloader: 1. Support at89s51/52 single chip microcomputer 2. Support all for ASP chips of AVR. 3. The output port is ATMEL standard port. 4. It features USB charging, and the target board supports target voltage of 5V, which can be connected and selected by jumper cap. 5. AUTOSPEED is available, with automatic speed regulation firmware, the downloader will automatically track the chip frequency to be programmed, automatically change the speed and achieve automatic speed regulation. 6. Reserve MOSI, MISO, RET, SCK, VCC and GND. The 6PIN interface facilitates users to connect the target board according to their needs. 7. PROGRAMMING interface is reserved. Users can upgrade the firmware of the downloader by themselves. Programming software: AVR_fighter, PROGISP1.66 PROGISP1.67, compile PROGISP1.68 lower or higher will do, to burn the same piece of software, very convenient. Specification: Material: Circuit Board, Electronic Components System board size: app.8.95 x 4cm/3.52 x 1.57in Color: Blue Quantity: 1 Set AT89S51 and S52 series pin connection:: MOSI>P1.5 MISO>P1.6 SCK>P1.7 /RES>RST GND>GND 5V>VCC Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x System Board 1 x Programmer 1 x Strap