Features: This adapter uses imported brand new original control chip PL2303HX, can stable flash at high speed. Set two data transmission light can be real-time monitoring data transmission state. Reserved 3.3V and 5V pin interface is convenient to power system of different voltage. The interface needle is parallel to the board instead of vertical, convenient to connect jumper wire when flashing. The whole circuit board is covered with high quality transparent heat shrinkable tube, which keeps the PCB circuit isolated from outside, in order to protect the board from burning by metal accidental short circuit. It supports for WINXP, WIN7 system. Specification: Type: USB to TTL Size: 5*1.5cm / 2*0.6in Quantity: 3pcs Weight: 16g / 0.6oz (approx.) Product application: 1. All kinds of satellite set-top boxes to upgrade 2. The router, hard disk, ADSL, broadband modem firmware to upgrade or crack 3. The mobile phone, GPS serial communication, vehicle inspection, DVDs to flash. 4. Simple serial port communication, commonly used serial debugging tool in super terminal 5. USB signals to TTL adapter for electronic enthusiasts. Package list: 3 * Converters 1、This adapter uses imported brand new original control chip PL2303HX, can stable flash at high speed. 2、Set two data transmission light can be real-time monitoring data transmission state. 3、Reserved 3.3V and 5V pin interface is convenient to power system of different voltage. 4、The interface needle is parallel to the board instead of vertical, convenient to connect jumper wire when flashing. 5、The whole circuit board is covered with high quality transparent heat shrinkable tube, which keeps the PCB circuit isolated from outside, in order to protect the board from burning by metal accidental short circuit.