What type of wireless network (WLAN) card is installed in the CF-73 Toughbook?

This depends on the specific model number: CF-73E (Mk1) — Intel®PRO/Wireless 2100 (802.11b) CF-73J (Mk2) — Intel®PRO/Wireless 2100 (802.11b) CF-73N (Mk3) — Intel®PRO/Wireless 2200 (802.11b/g) CF-73S/U (Mk4) — Intel®PRO/Wireless 2915 (802.11a/b/g) CF-73X (Mk5) — Intel®PRO/Wireless 2915 (802.11a/b/g) Note: Certain models of the CF-73 Toughbook do not have an integrated WLAN card.