Although Karel's comment is accurate, you might want to consider the BoxWave miniSync cable sold as a Nokia E95 accessory. It a compact retractable cable around 1 meter long. One end plugs into a standard USB port; the other provides N800-compatible power and mini USB connectors, which support simultaneous charging and connectivity. Of course you can also use the two functions individually.

The first one I purchased had a flaky power tip, but the replacement they sent out works fine with my N800. Fits in palm or pocket when closed, a nice addition to your travel kit.