支持的格式:
Word documents (.doc, .docx, .docm, .rtf)
Excel spreadsheets (.xls, .xla, .xlsx)
Zip or RAR archives (.zip, .rar)
videos (.avi, .mp4, .mov, .flv, .wmv, .asf, .mpg)
JPEG, GIF, TIFF, BMP, PNG or RAW images (.jpg, .jpeg, .gif, .tiff, .bmp, .png)
PDF documents (.pdf)
Access databases (.mdb, .mde, .accdb, .accde)
PowerPoint presentations (.ppt, .pps, .pptx)
music (.mp3, .wav)