Adapter Connectors USB To RS232 Adapter Female Plug DB25 Male To DB9 Adapter USB to the serial port provides a connection between USB and the traditional serial port RS-232 Adapter is designed to connect to the printer,mobile phone, PDA, digital cameras, modems or ISDN terminal adapters via USB port Because adapter does not use IRQ interrupt,is ideal if you need multiple serial devices connected to your computer Features: Compliant with USB specification 11 and 20 RS232 serial interface support (DB25 or DB9) Support data transfer rate above 1 Mb/s Support remote management and power management Support for Windows98/Win 7/Win 8/SE/ME/2000/XP Specifications: USB 2.0 to RS232 cable (male 9 pin) Cable length: (approximately) 94 cm / 37 inches Adapter printer plugs: DB9 female to DB25 male Easy to use Package includes: 1x adapter from USB to RS232 (DB9 plug) 1x adapter DB9 female to DB25 male 1x CD with drivers