You cannot use a PS2 as a peripheral (controller, capture device) for a PC. The PS2's ports (USB, i.LINK/FireWire, Ethernet) are for *its* peripherals, not for acting as one. However, you **can play PS2 games on a PC** via these methods:
Recommendation: **PCSX2** for playing. **Capture Card + OSSC** for authentic hardware recording. **Mayflash Adapter** for using your DualShock 2 on PC.