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The neo key would probally be alot easier for you to install yourself if you have little or no solder experience, the solder points for the jumper wire are easier to reach than some points required for chip installation. The release of the universal ea patcher really helped this usb modchip as far as booting games especially the titles by EA sports and midway. From a installers view, before i would go through the trouble of totally disassembling a v4 PS2 for 1 wire i would just as soon connect the other 7 wires and not bother with having to patch games but this is strictly my point of view... good luck with whatever you decide.
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