Not quite sure what model, but it is an old Time Capsule, I think 2nd generation, in any case, just beware that there is a strange bug with 7.6.1 firmware. If you want to do 5GHz mode, you need to set it to 802.11n (a compatible), if you set it to 802.11n only then the MacBook Air seems to lose connection every 10 seconds and an AppleTV generation 2 never connects. Networking is strange!