A silver edition is available in the United Kingdom exclusively.
The PlayStation 2 was such a hot item after its release that it was near impossible to find one on retailer shelves, leaving those wanting a PlayStation 2 to either wait or purchase the console online at sites such as eBay, where the console was being sold by many people for twice and sometimes five times as much as the manufacturers listed price.
It also has a different lens and some compatibility issues documented by Sony for earlier PS2 games.
As of V4 everything was unified into one board, except the power supply.
Two propositions were to name the old model (EE and GS, separate chips) V11.5 and the newer model V12, and to name the old model V12 and the newer model V13.
One of them includes the old EE and GS chips, and the other contains the newer unified EE+GS chip, otherwise being identical.
Later hardware revisions had better compatibility with PlayStation games (Metal Gear Solid: VR Missons works on most silver models).
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