Things You'll Need
Instructions
Power off your PlayStation 2 and remove all USB devices from your PS2's USB ports.
Look into the USB ports for any obstructions, dust or damage. If you see physical damage like cracking or bent connection points, your PlayStation 2 will need repairs.
Spray the USB ports using compressed air to clear any dust or debris. Then try the USB device again to see if it works.
Connect the USB device to your computer and see if your computer recognizes it. If your computer recognizes the device, the problem is with your PlayStation 2. If it doesn't, the problem may be with the device itself.
Try another USB device in the USB port. If it works, the problem is with the other device and not your PlayStation 2.