If you want a way to use the swap method (and have a v4 PS2), then this is your answer. I'm selling a v4 no solder chip that only needs to be plugged into two places once the ps2 cover is off (takes 5-10 mins). This set of v4 no solder chip and swap discs v2 sells for $40 - $46 on mainstream sites such as modchipstore.com, but I'm selling the bundle at $30!! Not only will you get the bundle, but I will personally help you via AIM or email. I have installed these chips numerous times myself. So don't think twice about getting an ugly flip top (which also leaves your laser suseptable to damage), just add new functionality to your eject button!