Zebra GX420d. Print technology: Direct thermal, Print speed: 6 lpm, Print speed: 152 mm/sec. Interface: USB 2.0, IEEE1284, RS-232C, ZebraNet, Wireless. Internal memory: 8 MB. Width: 171 mm, Depth: 209 mm, Height: 152 mm. Power requirements: 100-240 VAC, 50-60 Hz