ThingMagic Micro Hardware - Manual (Page 65)

Tag Handling
A D I V I S I O N O F T R I M B L E
60 Functionality of the Micro
Note
It is recommended the USB Interface be used when operating the Micro in
continuous reading mode. When the TTL Level UART Interface is used it is not
possible for the module to detect a broken communications interface
connection and stop streaming the tag results.