with direct thermal printing technology, sharp images with sharp definition are created. great for printing high-volume barcode labels. the label length is automatically calculated using the media calibration function. no need to manually enter label sizes. with a network connection, data is quickly shared with different departments. customize the td-4520dn to fit your needs with accessories including label peeler and cutter. network connection professional quality up to 300 dpi high print speed up to 6 frames per second print width up to 4.27 inch/108 mm easy setup with automatic media configuration ready to integrate with ios and android apps buttons: power, feed flash ram: 64 mb sheath color: white and gray led: status ram: 256 mb technology: direct thermal connectivity: serial port: serial rs-232c (male db9) usb interface: usb ver. 2.0 (full speed), type b wired network interface: 10/100base-tx printing: bitmap fonts: helsinki, gothic bold, san diego, brougham, brussels, gothic copy: 1-9999 (esc/p p-touch template) label detection sensor: yes maximum label width: 118 mm maximum print length: 3000 mm maximum print width: 108 mm mirror printing: yes resolution (dpi): 300x300 sequential numbering: 1 - 9999/a - z/a - z standard print speed: 152 mm per second supported commands: p-touch template, raster, esc/p, zpl ii emulation, cpcl emulation in the package: power adapter cable: yes other: endless white roll with black prints, 102 mm long (initial roll 2 m) usb cable: yes user guide: yes warranty certificate: yes dimensions: 108mm (w) x 155mm (d) x 224mm (h) weight: 2.08 kg