Star Micronics LC-8021 - Manual (Page 45)

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Chapter 6: Optional Accessories
This chapter explains how to install and use the following optional accessories
that are available for this printer:
❏
Serial Interface Unit (IS-NP192)
❏
Serial-to-Parallel Converter (SPC-8K)
Important!
Always make sure that printer power is turned off whenever installing or
removing optional accessories.
Serial Interface Unit (IS-NP192)
The parallel interface equipped on the printer as standard can be removed and
replaced with an optional IS-NP192 Serial Interface Unit. This makes it possible
to connect two separate computers for serial data communication.