Step 1: Disassembling the ps2.
*NOTE* This will void your warranty.
Okay. Now you have it disassembled. . . Do not touch the power ribbon.
Step 2: Modding the hardware
Layer 2 or 3 pieces of duct tape around this so the cap is not visible. You can also use scotch or masking tape, but duct is recommended.
Once you taped it up, you can put your playstation 2 back together.
Step 3: Last step of modding
Take a 1-2cm or so of toilet paper or any tissue and roll it up a little ball, and stick it in the little hole. Open and close it a couple times to get it to stick in there.
Boot up your swap discs and start playing backups! I have been doing this method for months.