There IS an Atheros WLAN card usable on T400 (authorized by Lenovo).
It is, however, a low-end AR2425 model. I can search for its FRU ID for you so you can purchase one if needed.
There IS an Atheros WLAN card usable on T400 (authorized by Lenovo).
It is, however, a low-end AR2425 model. I can search for its FRU ID for you so you can purchase one if needed.