usb to serial port cable allows your computer to make communication with serial devices equipped with 9 pin female RS232 interface USB to male serial adapter is designed for connecting Serial devices such as DB9 equipped PC, router, GPS, Programming machine, barcode scanners, label writers, serial modem, digital camera, card reader, palm PCs and digital organizer, etc (FT232 chip) 3 meters long FTDI serial cable for Windows 10, 8, 7, Mac OS 8 or higher, Linux 2.4.0 and later COM port to usb converter is designed with a high performance quality processor chip (FT232RL), which makes this USB RS232 adapter one of the most reliable adapters on the market 3m DB9 to USB adapter (9 pin male to USB-A male gold plated connector) using crystal clear blue enrich injection, strong and beautiful; active pins: 2(RXD), 3(TXD), and 5(GND)