Toshiba Tecra Z50-A (PT540x/PT544x/PT545x) Tecra Z50-A1501 Tecra Z50-A1502 Tecra Z50-A1503 Tecra Z50-A1510 Tecra Z50-A5101L Tecra Z50-A5161SM Tecra Z50-A5209K Tecra Z50-A5260SM Tecra Z50-A5302 Tecra Z50-A5302M Tecra Z50-BT1500 Tecra Z50-BT1501 BIOS Version: 3.70 All models having part numbers beginning with: "PT540M", "PT540P", "PT540U", "PT544M", "PT544P", "PT544U", "PT545M", "PT545P", or "PT545U". Improved: The size of windows will change after waking from Sleep on Windows 7 computers with a Dock RGB display. The display output setting will also not be saved correctly. Improved: TOSHIBA USB3.0 HDD Stor.E Edition is not displayed in the Boot Menu in UEFI Boot mode. Updated: Microcode Rev.1C. Optimized: Audio Codec setting.