Sony proudly showed off its PlayStation 4 hardware for the first time at E3, and now we're getting a peek at what developers are working with this generation thanks to the FCC. A DUH-D1000AA Development Kit for PS4 prototype is listed in these documents, thanks to its support for Bluetooth and 802.11 b/g/n WiFi. As one would expect, the diagrams show it eschews the sleekness of the consumer model for extra cooling, a shape made for rack mounts plus extra indicator lights and ports (USB and Ethernet.) Also of note is a "max clock speed" listing of 2.75GHz, and although we don't know what the game system will normally run it's interesting to hear what that 8-core AMD Jaguar silicon may be capable of, all while maintaining a temperature between 5 and 35 degrees celsius. Hit the link below to check out the documents for yourself, after this and the system's controller all we're left waiting for is Mark Cerny's baby.