Lights:Wireless LAN active is selected.Flashes:Printing or scanning over wireless LAN. Also flashes while searching for wireless LAN accesspoint during setup and when connecting to the access point.(13) USB flash drive portInsert a USB flash drive to this port.Inserting the USB Flash DriveYou can connect the optional Bluetooth Unit BU-30* to print directly.Printing from a Bluetooth Compliant Device* The Bluetooth Unit is not available in some countries or regions depending on the local laws andregulations. For details, contact the service center.WarningDo not connect any equipment other than the USB flash drives and optional Bluetooth UnitBU-30 to the USB flash drive port of the machine. This may cause fire, electric shock, ordamage to the machine.ImportantDo not touch the metal casing.Do not use the USB cable longer than 10 feet (3 meters) to connect to the machine since itmay affect the operation of other peripheral devices.(14) cassette (upper)Load 4" x 6" (10 x 15 cm) or 5" x 7" (13 x 18 cm) size photo paper into the cassette, and insert itinto the machine. Two or more papers of the same size and media type can be loaded at thesame time, which are fed automatically one sheet at a time.Loading Small Size PaperThe disc tray can be stored in the back of the cassette (upper).How to Detach / Attach the Disc Tray(15) cassette (lower)Load A4, B5, A5, or Letter-sized plain paper or photo paper and envelopes into the cassette, andinsert it into the machine. Two or more papers of the same size and media type can be loaded atthe same time, which are fed automatically one sheet at a time.Loading Large Size PaperLoading Envelopes(16) platen glass