Yes, we do supply compatible Regatech brand adapter for Toshiba Satellite c665-p5012 model
If you could please let us know, the original Watt and pin size mentioned on your existing charger
As for same model there are 3 watt adapters available with us
Regatech For Toshiba Satellite C665 Laptop Charger Power Adapter Cord 65W
Regatech For Toshiba Satellite C665 Laptop Charger Power Adapter Cord 90W
Regatech For Toshiba Satellite C665 Laptop Charger Power Adapter Cord 75W