This is the Wiggle Spine, an open hardware design for Wiggleport's power and data hub.
Multiple spines can be synchronized with cheap TOSLINK-style optical cables
The spine also has a built-in DMX output so it's easy to add inexpensive lights and effects to your project
Wiggleport distributes power too, not just data
Wiggleport is an open source hardware design optimized for simple and straightforward real-time performance. It's based around an FTDI FT2232H high-speed USB FIFO interface, combined with a precision clock synthesizer and a tiny FPGA for glue logic. It stays simple and inexpensive by doing much of the work in software, relying on the powerful CPUs available on even small embedded Linux boards now.
Going even deeper, Wiggleport is really kind of a construction kit for hardware and drivers that stream signals in real-time. This reconfigurability is what lets Wiggleport automatically configure the various add-on modules, but you can also use this core directly to create your own hardware, with or without including an FPGA.
Coming soon... development is happening here now! You can follow the progress at wiggleport.org.