JVC RM-LP5G User Manual page 10

Interface Function and Connection Diagram
① Upgrade Interface
This interface is to upgrade keyboard firmware by laptop. Using
Micro USB Cable direct connection with a PC and upgrade tools
software.
② RS422/RS485 Interface
This Interface is used to connect with Cameras by RS422 or
RS485, detailed connection diagram as follows：
① ② ③
- 9 -
④ ⑤