To calculate per client bandwidth through an 802.11n AP network, three key bandwidth requirements are considered: Channel bonding on 5 GHz is necessary for a client to achieve a 300 Mbps WiFi link as this promotes higher throughput; when more clients connect to one AP, the remaining bandwidth is divided per device, affecting individual client bandwidth; and a 100 Mbps Ethernet switch port can be a potential bottleneck that limits overall throughput to the client. These factors are essential for determining the effective bandwidth available to each client in an 802.11n network.