Use .uk and search for 'keyspan usb serial' to find it at Dabs or (cheaper at £24.95) at Expansys.
They also provide the custom Garmin connectors that allow you to build your own data cables. Drivers for Windows, Mac OS X, and Linux. Pfranc: they have a long page discussing their adapters, and both the good and the bad things about them at.BAFO BF-810: there are drivers for Mac OS X, Windows and Linux.EasySync: British company, their cables use FTDI chipset and support full flow control, flushing etc.The site provides lots of troubleshooting support. Converters: USB to serial adapters: for Windows 7, Mac and Linux, FTDI Chipset and LED lights. Here are some devices that OSM people have used successfully: 5.1 Problems with USB Adapter: pl2303 under Linux.
