Device and method of reading bar code symbols with intelligent interface data communication with a host system.

A device (151) symbol reading bar codes having a mode of operation for interface configuration and operation mode of reading bar codes, said reading device symbols barcode comprising: a motor ( 53) symbol reading bar codes for reading symbols barcodes affixed to objects during said operation mode read barcode, and to produce data symbol character representing said symbols barcode; a subsystem (5) data transmission, operatively coupled with the reader barcode engine, for communicating said data symbol character to a communication interface of a host system over a communication link established between said device (151) symbol reading barcodes and said host system; wherein said subsystem data transmission is capable of implementing a plurality of different communication interfaces between said motor (53) symbol reading barcodes and said host system, and wherein, during said operation mode Configuration interface, said subsystem (5) data transmission is arranged to circulate automatically by the plurality of different communication interfaces to ascertain for each interface, whether or not corresponds to the host interface by testing the communication; and it is arranged to automatically activate the interface to which the communication test has been positive.