Historically, if you wanted to install a modchip in your PlayStation 2 you needed to solder it to the mainboard with something like 14 individual wires. 14 wires! That’s 14 chances for you to screw something up with a soldering iron.
X-Box modchips have for a long time been ‘solderless,’ usually requiring just a clip or two that hold the connections in place through pressure – and no soldering skills required.
The DMS4 E.Z.I. is the world’s first PlayStation2 Solderless modchip. Pricing hasn’t yet been announced.
In a fantastic twist of Engrish, “EZI” stands for “Effort Zero Installation”.