ZyXEL Communications NSA-220 ユーザーズマニュアル

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Chapter 1 Getting to Know Your NSA
NSA-220 User’s Guide
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Place the NSA behind a firewall and/or IDP (Intrusion Detection and Prevention) device to 
protect it from attacks from the Internet. 
"
See 
 for a more detailed list of NSA features and lists 
of compatible hard drives and USB devices.
Refer to the Quick Start Guide for hardware connections and how to install and remove hard 
drives from the disk trays. 
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Turn off and disconnect the NSA before you install or remove internal hard 
drives.
1.1.1  LEDs
The NSA LEDs (lights) tell you important information.
Figure 2   NSA Front Panel