63Upgrade Selected: Upgrade firmware for the selected managed AP. Note that you need to upload thefirmware file into the ZAC Access Point in AC mode prior to firmware upgrade, otherwise a window willpop up saying TAP firmware hasn’t been uploaded.Upgrade All: Click to upgrade all the managed APs simultaneously.Refresh: Refresh the AP management list manually.System SettingsAllows you to configure device and IP settings for the ZAC Access Point in AC mode.Device Settings:Device Mode: Three modes are provided: AC+Thin AP, Thin AP, FAT AP. Select AC+Thin AP tohave the device act as virtual access controller to manage other managed APs on your network.Select “Thin AP” to have the ZAC Access Point managed by the ZAC AP in AC mode. Select FATAP to perform as a standalone AP, neither managing nor managed by other ZAC APs.Device Name: Specify the device name, which is composed of no more than 15 characters w ith(0-9), (A-Z), (a-z) or (-).Ethernet Data Rate: Specify the transmission rate of data for Ethernet. Default is Auto.Spanning Tree: Spanning Tree Protocol (STP) is a link management protocol for AP which provides