The USB to 2-Port DB9 Serial Adapter from Cables To Go is the perfect way to connect serial devices to laptops or PCs with no serial ports. Many new laptops and PCs have at the most, one serial port. This is a problem when you have multiple devices with serial connectors! What happens when you have a digital camera and a PDA that you want to connect at the same time? The USB to 2-Port DB9 Serial Adapter is the answer to that problem. It is designed for connections to PDAs, digital cameras, modems, ISDN terminal adapters, or any other serial devices through your USB port. Since the adapter uses no IRQs, it is perfect for attaching several serial devices to your PC. And don't worry about transfer speeds; the USB to 2-Port DB9 Serial Adapter supports data transfer rates of over 230kbps!The USB to 2-Port DB9 Serial Adapter provides you with the connections you need without the hassles. The plug-and-play functionality makes installation a breeze. The adapter is bus powered so no additional power source is needed. The light-weight design makes it perfect for the business traveler. Throw it in your laptop bag and be on your way!PRODUCT FEATURES:One USB A to two (2) DB9 Male;Cable length: 24 inches;Works with PDAs, digital cameras, modems, and ISDN terminal adapters;Supports automatic handshake mode;Over 230kbps data transfer rate;Supports remote wake-up and power management;96 byte buffer each for upstream and downstream data flow;Easy installation;Gives you an additional RS-232 port and frees your existing ports for other uses;No IRQs, no IRQ conflicts.