Sony has also made a PVR/DVD burning consumer device that plays PlayStation 2 games called the PSX.
It was not until late 2001 that the Microsoft Xbox became the second console with (non-standard) USB and DVD support.
V5 introduces minor internal changes and the only difference between V6 (sometimes called V5.1) and V5 is the orientation of the Power/Reset switch board connector, which was reversed to prevent the use of no-solder modchips.
For some consumers this is in fact a limitation, especially for the fans of titles such as Final Fantasy XI, which requires the use of this peripheral, and prevents the use of the official PS2 Linux kit.
After an apparent manufacturing issue caused some initial slowdown in producing the new unit, Sony reportedly underestimated demand, caused in part by shortages between the time the old units were cleared out and the new units were ready.
As of V4 everything was unified into one board, except the power supply.
Developers also complained that it was difficult to develop for the system, with little in the way of reference material from Sony for its exotic architecture.
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