The horror, it's just a cut-cost version from the original. No tactile buttons because the ISD chip is missing. No power-up tunes or speaker for the same reason. The shielded connector is replaced by a cheap generic one.
Cheap Mediatek radios instead of Broadcom or Marvell.
Oh, and they have Apple complex, now using a black PCB.
Interesting thing thou, the ISD chip also controls the touch buttons on the front and it has empty pads for an external memory chip besides it. Remember how different versions of the 360 played different power and eject tunes? In the Xbox One they can just populate the memory chip and a different tune will be played. It's ready for the launch of different models, like a Halo edition or something like they did with the 360.
The ISD chip is the one that plays the power on, power off and eject tune on that internal speaker, same as on the 360 (except for the 360E that has the chip pads but unpopulated). The datasheet is readily available searching for ISD 9160F.
The RF antenna is the patch of board that takes the signal from J2, then goes to R2, R3 and then to the actual antenna, the weird triangular/square shaped vias.
You kindly forgot the original EyeToy for the PS2. It even had a game called Kinetic.
That is actually a ZIF, the lock/latch is different from other connectors (ZIF's can be tricky when you don't know them) but you can open it from the cable side with a tool releasing the tab to the back.