There are many ways for a thunderbolt chain to come to an end, e.g. Thunderbolt to Firewire adapter, Thunderbolt to Mini Display Port adapter, Thunderbolt to Ethernet adapter. I can't seem to find a Thunderbolt Splitter or Hub anywhere. There are some hubs that add usb ports, but none of them appear to actually multiply the number of Thunderbolt dead-ends you can have. Please note: everyone knows Thunderbolt is designed to daisy-chain. The point is there are many items that will end the chain, so a splitters are still required so long as you have more chain-ending-items than you do Thunderbolt daisy chains.