D-Link DSL-2640B User Manual page 22

Section 5 - Home
During transitional times for upgrades in the enterprise environment, this mixed authentication method allows "upgraded"
Mixed
users and users not yet "upgraded" to access the network via the router. RADIUS server information must be entered for
WPA2/WPA:
WPA and a as well as a group re-key interval time. Both TKIP and AES are used.
Mixed WPA2
Useful during transitional times for upgrades in the home or SOHO environment, a pre-shared key must be entered along
/ WPA-PSK:
with the group re-key interval time. Both TKIP and AES are also used.
D-Link DSL-640B ADSL+ 4-Port Router User Manual