Depending on what wireless protocols your card supports, it can have up to a theoretical speed of 300Mbps in buildings with 802.11n coverage. This would correlate to real-world performance of approximately 100Mbps in ideal circumstances. As this is a shared network, the number of users on your access point, your location, and what types of applications they are using may affect your performance. The performance speeds listed above assume you are using an 802.11n dual-band card in a building with 802.11n coverage. 802.11g cards will see an approximate performance speed of 20Mbp.
Keywords: Wireless network, wireless protocols, 802.11n, shared network, access point, speeds, dual-band 802.11g