iFixit has disassembled the MacBook Pro with Retina Display. The insides of the MacBook Pro are similar to the MacBook Air. The RAM of the MacBook Pro is soldered to its logic board, which means that you will be stuck with whatever amount you get at point of purchase. Apple is also using proprietary screws and Flash memory. The battery is affixed using glue rather than screws. This makes it more difficult to replace because it is right above a fragile trackpad cable. The fan has asymmetric blade spacing to reduce the noise and components are made by Samsung. It has a 95Wh battery at 10.95V compared to the 77.5Wh that was in laptops previously. There is a pair of Broadcom chips with 802.11n dual-band wireless support and Bluetooth 4.0.