Keep critical operations moving with Zebra?s durable ZT400 Series printers constructed with an all-metal frame. Featuring advanced technology ? including a large colour touch display and versatile connectivity options ? these printers take performance to a new level and are adaptable for your evolving needs. Intuitive to integrate and operate, they feature Zebra?s Print DNA software powered by Link-OS to deliver unparalleled intelligence and innovation for exceptional performance and simplified remote manageability. Easily replace legacy printers using ZPL, EPL or non-Zebra command languages. Available in two print resolutions, and a 6″ print width, the ZT421 is ideal for a wide range of applications. Purchase what you need today and add new features onsite tomorrow with field-installable options such as media handling and an RFID encoder. Standard connectivity includes Serial, Ethernet, USB, dual USB Host and Bluetooth 4.1. Add optional dual-band 802.11ac Wi-Fi/Bluetooth 4.1 and Bluetooth for fast, reliable connections. Two open media slots let you add Parallel and more.