This is a Sony 300-0101-1831-B Vaio Fan With Heat Sink Assembly for use in the VPC-SB series of laptops. These assemblies have a Nidec G70N05NS5MT-57T02 5V cooling fan installed. They are new and have never been used. They were originally bulk packaged for OEM distribution and we have repackaged them for individual sale. They are being sold as pictured and do not include any additional parts or accessories.