The device was poorly received, with some major features absent from the first revisions of the hardware, and has thus far experienced very weak sales in Japan, in spite of major price drops [5].
Due to its thinner profile, it does not contain the 3.5" expansion bay, and therefore does not support the internal hard disk drive but due to the presence of USB 2.0 ports an external USB Hard disk can still be used, and now uses an external power supply, like the Gamecube.
There is also now a V14 model (SCPH-75001) which contains an integrated EE and GS (disputed - see talk page) , and different ASICs compared to previous revisions, some chips having a copyright date of 2005 compared to 2000,2001 for earlier models.
In September 2004 Sony unveiled the third major hardware revision (V12, model number SCPH-70000).
A product named HD Connect can be soldered into the unit giving hard drive support though.
Currently, most people just use V12 for both models, or V12 for the old model and V13 for the newer one.
However, the release of several blockbuster games during the 2001 holiday season pushed the PS2 far in front even as the Xbox and GameCube made their impressive debuts.
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