Compuprint 3056 - Manual (Page 66)

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Environmental Specifications
Temperature
Operating 5deg~35deg
Storing -20deg~60deg
Humidity
Operating 20%~80%RH
20%~80%RH without condensation
Storing 5%~85%RH
5%~85%RH without condensation
Interface Technological Specifications
Centronics parallel interface.
USB interface accords with USB 1.1 criterion.
Serial interface accords with RS-232C criterion.
LAN interface – refer to USER GUIDE of NETWORK INTERFACE
(Compuprint 3056N only)