Modders don't want to buy a complete power supply to test out Slims. Instead of having 2 PHAT power supplies, just just your normal power supply and then plug in the adapter when you want to test out a slim. Cheaper, cleaner, and easier.
You should replace your laser lens if your system has the following problems:
This is a 1GBIT NAND PCB Add-on for the PROGSKEET programmer. Allows Dual Nand features allowing multiple scenarios and uses for consoles with 128MB NAND onboard flash memory
Uses 2 x 32 pin ZIF sockets on each side of the PCB so requires the PROGSKEET Adaptor PCB Kit