Efficient Networks EEE 802.11b/g Wireless USB 2.0 Adapter - Manual (Page 44)

IEEE 802.11b/g Wireless USB 2.0 Adapter Version 1.2
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In this window you can change the Signal Strength Display Units from dBm to %,
and increase or decrease the refresh interval rate, as well as displaying the data
in a cumulative or relative fashion.
Click on the OK button to return to the previous window.