This download has the most recent USB driver for Microsoft Vista 64-bit. For 32-bit version, please see here: http://discussion.buygpsnow.com/files/folders/tweak_mtk_baud_rate_-_only_for_mtk_chipset/entry6184.aspx

This download has the most recent USB driver for: Windows XP Windows Vista Windows 98 Mac and Linux

The included Holux M241 Logger utility has known problems for downloading logged data, specifically the inability to completely download all the data. Please uninstall your current version prior to re-installing this one.