IMPORTANT : Before deciding which chip to go for, you need to find out 2 things about what type of wii console you have

UPDATE : Nintendo has just recently began shipping out Wii's with epoxy covering the drivechip pins to prevent people from using the solderless clips. If you have a new console that was purchased after November 2008 with serial code like LU6xxxxxxxx you may have a new type of EPOXY D2E chipset, look at the below table for solutions.

Wii Serial Number: This is located on the large sticker on the bottom of the Wii (when standing vertically). It's 11 digits long and made up of letters and numbers. This number is unique to each and every Wii console and it also contains valuable data about the console.

Wii Copyright Year: This is located on the top left of the large sticker on the bottom of the Wii console (when standing vertically). Since the Wii does not have a manufacturing date available the copyright year is the next best thing. Tracking that against the serial number could provide some insights.

* Although the table above should give you some sort of indication of whether your drive pins are cut or not the only true way of finding out is to open up your console and look at the chip itself to see if any pins are missing :

If you do have pins missing, don't worry! You can still purchase the D2sun modchip w/soldeless clip, which is 100% solderless since this modchip does not use these pins.