usb interface, u-flash disk supported,machine will read files from memory stick,you can work even without a pc. ` smooth and precise engraving and cutting. electric up/down table. red dot pointer.provides a visible means of determining engraving location. raster vector color mapping.change your engraving speeds and power by using color settings. air assist,remove heat and combustible gases from the cutting surface and make the engraving and cutting projects a breeze. adjustable speed and power.intuitive control panel,set speed, power and more controls directly from the laser. exhaust fan system included. ` reinforced and thickened machine body make transportation absolutely to be safer and longer life time..syi