SanDisk Wireless LAN Card - Manual (Page 9)

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IP Address
Computers and other networking devices on a network are assigned an
identifying number using the Internet Protocol (IP Address).
MAC Address
(Media Access Control) address, a hardware address that uniquely identifies
an access point (or the Wireless LAN card).
WEP Encryption
WEP (Wired Equivalent Privacy) is a security protocol for wireless local area
networks (WLANs) defined in the 802.11b standard. WEP is designed to
provide the same level of security as that of a wired LAN.