Techniques for managing access to a file allocation table in an external storage device are disclosed. According to one aspect of the techniques, an accelerated apparatus, as an interface, is provided between an external storage and a device (or a host processor thereof). The accelerated apparatus comprises a center controlling unit, a FAT storage sector calculating unit, a FAT storage sector accessing unit, a buffer and a result storing unit and configured to manage the access to the FAT so that the host process is freed up to perform other tasks.