NEC PE401H User Manual page 12

Integrated RJ-45 connector for wired networking capability
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The customer can control the projector by own computer via
Wired LAN.
Software programs (User Supportware)
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Two programs: Virtual Remote Tool, PC Control Utility Pro
4/Pro 5, which can be be downloaded from our website.
Preventing unauthorized use of the projector
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Enhanced smart security settings for keyword protection,
cabinet control panel lock, security slot, and security chain
opening to help prevent unauthorized access, adjustments and
theft deterrence.
Introduction
5 ... English