PS2's opening day console sales eclipsed the previous record of 225,000 made by the Sega Dreamcast in 1999.
V0 was a Japanese model and was never sold in Europe or the US.
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.
It also has a different lens and some compatibility issues documented by Sony for earlier PS2 games.
To this day, the PS2 holds the record for the most consoles sold in a single day as well as the record for most consoles sold in launch day in America.
A product named HD Connect can be soldered into the unit giving hard drive support though.
Although external USB 2.0 enclosures are affordable the lack of internal hard disk has implicated a problem for users with perhaps little knowledge of the software required to enable the external disk functionality.
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