As the title says the D2C modchip now has an official name. It's called the D2CKey (a spinoff of WiiKey).
But there are some things you need to know:
D2CKey works on D2C consoles ONLY. Will not work on DMS, D2A or D2B.
Installation of D2CKey consists of over 30 wires and should not be attempted by amateurs.