Toshiba Satellite S50-B S55-B S55T-B5 Series Copper CPU Cooling Heatsink A000300600.Toshiba Part Number: A000300600Compatible Part Numbers: FCNFBBLN005010Compatible Models: Toshiba Satellite S50-B S55-B S55T-B5150 S55T-B5233 S55T-B5234 S55T-B5260 S55T-B5273 S55T-B5273NR S55T-B5335 Series