Toshiba Tecra A50-A (PT644x/PT648x) Tecra A50-A1550 Tecra A50-ASMBN02 Tecra A50-ASMBN03 Tecra A50-ASMBN04 Tecra A50-ASMBN22 Tecra A50-ASMBNX1 Tecra A50-ASMBNX10 Tecra A50-ASMBNX2 Tecra A50-ASMBNX3 Tecra A50-ASMBNX4 BIOS Version: 4.40 All models having part numbers beginning with: PT644M, PT644P, PT644U, PT648M, PT648P, or PT648U Improved: The size of windows will change after waking from Sleep on Windows 7 computers with a Dock RGB display, and the display output setting will 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.