Backward Compatibility
The PlayStation 3 does not include interfaces for legacy PlayStation peripherals, though IGN.com tested a legacy controller using a PS2-to-USB adapter, finding that it is compatible, though most other devices (such as the Guitar Hero controller) may not be compatible. However, with the release of firmware 1.70 for the PlayStation 3, Sony has added support for previous Guitar Hero controllers with generic PS2-to-USB adapters (although the whammy bar is not functional). Nyko started production on the "Play Adaptor", a PS2-to-USB adapter allowing for guitars and other PlayStation 2 peripherals to be used on the PlayStation 3 and was scheduled for release in Q2/2007, but Nyko stated at the end of March that the production of this device had been postponed due to compatibility problems with the PS3. The PS3 supports both the USB EyeToy camera/webcam and SOCOM Headset for video and voice chat. A memory card adapter is available so users can copy their old PS/PS2 game saves to a virtual memory card on the PS3’s hard drive. The PlayStation 3 can also use Memory Sticks to store and save data for PlayStation and PlayStation 2 software. New PlayStation 3 systems no longer support PS2 playback (whether through use of the Emotion Engine & Graphics Synthesizer hardware or through the Graphics Synthesizer and software emulation of the Emotion Engine) or Memory Cards.
Read more about this topic: Play Station 3 Hardware