I have an ethernet bridge with wireless capability that allows wired ethernet devices to connect to a DSL wireless router which provides access to the internet. The bridge only has 4 ethernet ports and they have all been used up. I would like to add additional ethernet devices to the network but don't have any free ports. Instead of purchasing an additional bridge, would it be possible to connect an ethernet hub to the existing bridge or does it need a switch. Also what kind of cable would connect between the hub/switch and the bridge - crossed or straight ?