USB to RS232 Serial Adapter Converter 4 Pin Serial Port terminal block FTDI Chip TX RX GND VCC 5V Module Support Win10/8/vista/androidPin Assignment : TXD, RXD, GND , 5V powerFTDI/FT232RL chipset import from UK. Best QualityWith Led signal lights for POWER, TXD,RXDLength: about 65mmFTDI FTDI chip + RS232 Level Shifter with the best compatibility and stability. Operating system support:From FTDI company drivers supportWindows 10Windows 8.1Windows 8.1 x64Windows 8Windows 8 x64Windows Server201 2 Windows Server 2008 R2Windows 7 Windows 7 x64Windows Server 2008 Windows Server 2008 x64Windows Vista Windows Vista x64Windows Server 2003 Windows Server 2003 x64Windows XP Windows XP x64Windows ME Windows 98 LinuxMac OS X Mac OS 9 Mac OS 8Windows CE.NET (Version 4.2 and greater)AndroidWindows RTPackage:1 X FTDI USB to RS232 Serial Adapter (without CD)Note:If your operating system can not download the drivers automatically, you may need to download and install a driver from http://www.ftdichip.com/FTDrivers.htm.Besides, As the feedback from our customer , some customers do not know how to install the driver for Mac OS.Please see the installation guide as following links: https://www.ftdichip.com/Support/Documents/InstallGuides.htm