The Datamax-O-Neil I-4210 features MCL (Macro Command Language) which allows users to develop powerful software applications that can be hosted on the I-4210 printer itself. The I-4210 also features RFID compatibility with an RFID-enabled version as well as RFID-Ready versions that only require an easy-to-install RFID module. The I-4210 has 8 or 16 MB of memory, 203 dpi resolution and a resizable hub to accommodate differing label core sizes.