Product Description Usb To Rs232 Serial Adapter 4 Pin Terminal Block Txd Rxd Gnd Vcc Pinout With Ftdi Chip Support Windows Xpandroidwindow7810Mac Osvista USB to RS232 Serial Adapter converter 4 Pin Serial Port terminal block FTDI chip TX RX gND Vcc 5V Module Support Win108vistaandroidPin Assignment : TXD, RXD, gND , 5V powerFTDIFT232RL 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 81Windows 81 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 cENET (Version 42 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:wwwftdichipcomFTDrivershtmBesides, As the feedback from our customer , some customers do not know how to install the driver for Mac OSPlease see the installation guide as following links: https:wwwftdichipcomSupportDocumentsInstallguideshtm California Prop 65 Warning : This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information visit to the website.