The Haicom HI-305N. ‘Tis a GPS receiver, squire. With Compact Flash and mini-1394 interfaces. The clever bit though, is the side loading SD slot. To hold the mapping software for your PDA, see?
After the proper driver installed, with the SD memory card inserted, as soon as user plug the Compact Flash interface, there will be a folder created from host device. Beside using it as a complete GPS solution, HI-305N can also be a SD card reader in CF interface. One can store any file into any standard SD memory card and the file can be read or write via the Compact Flash interface.