Before you edit any files outside of the \ img subdirectory for your theme or your theme CSS file, back up the original files.

在编辑\ img子文件夹外的任何主题文件或主题CSS文件前，请对原始文件进行备份。

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The full-size USB port provides connectivity to existing equipment and SD card reader enables easy file transfer plus back-up when Internet access is not feasible.

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Growing businesses find that a server set-up provides more control over file management, sharing, back-up and security, plus efficiency when adding people.

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"Benefits to firms will include faster file storage, computer back-up and processing for example, " he said.

BBC: England