Other minor changes to the design included mechanical buttons replacing electrostatic touch sensitive ones, and a shorter but brighter LED indicator on the top surface of the console. Changes to the design included a matte black HDD cover replacing the original gloss black version. The CUH-1200 series was officially announced in June 2015, releasing first in Japan, then worldwide. In late June 2015, a 1TB CUH-11 series machine was announced for European/ PAL markets. The CUH-12xx series are also referred to as the 'C chassis' variant of the PS4.
Differences between the CUH-11 and CUH-12 series included a reduction in rated power from 250W to 230W, a reduction in weight from 2.8 to 2.5 kg, and physical buttons. In 2015, the CUH-12 series as variants CUH-1215A and CUH-1215B (with 500GB and 1TB storage respectively) were certified in the US by the FCC. The original released 500 GB HDD PS4s had manufacturer serial numbers of the form CUH-10 XXA a minor modification with a different form of Wi-Fi Microstrip antenna was registered in mid 2014 as part numbers CUH-11 XXA.
