Accton Technology WN3501C Quick Installation Manual page 20

11 Mbps Wireless USB Adapter
If you aren't sure whether all the Clients and Access point radios in your wireless
network support the Short RF preamble, then leave this setting on "Auto"
(Default).
11. "Rate (Mbps)" is the data transmission/reception rate setting. It can be set to
Auto, 1 Mbps, 2 Mbps, 5.5 Mbps, 11 Mbps. Usually this should be set to Auto. In
a radio frequency hostile environment, a lower rate can provide more stable
transmission quality.
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