Buffalo is famous for its super small USB ThumbDrive. One of their latest product is the RMUM-8GH series that measures at only 5mm. It is actually a mini USB 2.0 MicroSDHC card reader sold with a 16GB microSDHC card, so it is possible for you in the future to even upgrade the device with a 32GB MicroSDHC when they will be available for us to buy. You can now pre-order the for 15,500 Yen ($162).

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