After 5 years of the PlayStation’s release, technology has moved quickly and it was time to consolidate things – The PS one is almost half the size of the original PlayStation model and SONY made a few changes to buttons and ports.
The Reset button is now Combined with the Power button on the top left. Instead of a separate button for reset, the power button could be pressed again to restart the unit just like the original. The disc tray Open button functions the same as the original on the right side of the top of the case.
On the back of the unit, there are only two ports – One is the new power jack which required an external power supply – 7.5V A/C adapter. The other port is the common Multi AV port that SONY used on the first model of the PlayStation and eventually the PlayStation 2.