This CardBus RS232 serial laptop PC adapter card adds two RS232 serial ports to a notebook computer, letting you connect your mobile computer to serial peripheral devices.
Supporting data transfer rates of up to 921.6 Kbps, the RS232 serial adapter features a high performance 16950 UART chipset, ensuring flawless connectivity with your serial peripherals.
The adapter is backed by StarTech.com's lifetime warranty and free lifetime technical support.
Customer Reviews of StarTech.com 2 Port CardBus RS232 Serial Laptop PC Adapter Card - 16950 - 2 x 9-pin DB-9 Male RS-232 Serial
RS-232 serial port on my laptop3/11/2009
Needed a traditional RS-232 serial port on my laptop. Product was easy to setup and to get going. I have used a USB to Serial converter buthe the software was unstable and would not work on a consistant basis. I have used this one for a month with no problems and is working as promoted. I would strongly recommend buying this Startech CardBus serial adapter from Buy.com.
No "real" Serial Port...No Problem10/15/2008
Most laptops (possibly all of them by now) no longer include traditional RS-232 serial ports, but I regularly use serial communications in my engineering work. I often find it necessary to monitor comms on two devices simultaneously. As a person who has never had very good experiences with most USB-to-serial converter devices (they've never been very reliable for me), I was skeptical when a colleague recommended a PC-card style replacement. Now, I'm glad he did. With this card, I now have two very stable and very reliable "real" RS-232 serial ports on my laptop. Install was very simple and the unit operates as well as any serial device I've ever owned. Also, Buy.com's price on it was about $30 less than I had seen at other electronics sites. If you need to add a serial port (or two) to a laptop, I would strongly recommend buying this Startech CardBus serial adapter from Buy.com.