Firmwares Hitachi HTS545050B9A300 VersionPrevalence PB4OC64G34.5% PB4OC60F33.5% PB4OC66G11.5% PB4OCA1G9% PB4ZC61H5% PB4OC60N3.5% PB4ZC6ZH2.5% PB4OC60S0.5%