Linksys WRT1200AC User Manual page 10

Speed Test — Lets you test your network's Internet connection speed.
External Storage — lets you access an attached USB drive or eSATA drive (neither
drive is included) and set up file sharing, a media server, and FTP access.
WRT 1200AC | How to Use Linksys Smart Wi-Fi
Connectivity — Lets you configure basic and advanced network settings.
Troubleshooting — Lets you diagnose problems with your router and check the
status of the network.
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