SMC Networks SMCWHSG44-G - Manual (Page 98)

802.11 wireless networks.
Wired Equivalent Privacy (WEP)
WEP is based on the use of security keys and the popular RC4 encryption
algorithm. Wireless de-vices without a valid WEP key will be excluded from
network traffic.
WPA Pre-shared Key (PSK)
PSK can be used for small office networks that may not have the resources
to configure and maintain a RADIUS server, WPA provides a simple operating
mode that uses just a pre-shared password for network access.
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