Aztech WL230USB User Manual page 33

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Shared key mode involves a shared secret key to authenticate the wireless station to the
AP. It requires that the station and the access point use the same WEP key to
authenticate. This basically means that WEP must be enabled and configured on both the
AP and the other wireless stations with a same key.
Preamble Type
Preamble is used to signal that data is coming to the receiver.
Short preamble increases performance as less time sending preamble means more time
for sending data.
Select Long and Short Long and Short to have the wireless LAN adapter automatically use short preamble
Long and Short Long and Short
when access point or wireless stations support it; otherwise the wireless LAN adapter
uses long preamble.
User Manual
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