public HardDrive(String pSerialNumber, String pBrand, String pModel,
			float pPrice,float pPriceSales, int pAvailableCant, boolean pAvailable,
			String capacity) {
		super(pSerialNumber, pBrand, pModel,pPrice, pPriceSales, pAvailableCant, pAvailable);
		this.capacity = capacity;
	}