Windows XP Downgrade Limitation for VGN-TT4

1. HDMI is NOT supported.
2. The audio format which can be outputted is PCM only.
3. Sounds are not being output when playing back a DVD title in Dolby Digital Sounds by Windows Media Player.
    - MS Decoder for Dolby Digital Sounds is required.
4. Noise canceling function is NOT supported.
5. Plug and Display function does not work.
6. Wireless WAN function does not work. (Wireless WAN bundle models)
7. The error message System file cannot be updated appears when installing TPM Professional Package.
    - To complete installation, click OK in the error message, and continue the installation.
8. The contents are that of Bluetooth 2.0 + EDR.
9. One seg is NOT supported.
10. Full seg is NOT supported.
11. Blu-ray disc is NOT supported.
      - CD/DVD is supported.
12. The copyright protection function of the SD memory card does not work
13. SSD RAID model is not supported
14. Ambient light sensor is NOT supported.
15. WinDVD can't playback on the clone mode. (Only Intel Graphics model)
16. Online and Offline manual are not offered for XP Downgrade.
17. VGP-BGU1 (Bluetooth GPSUnit) is NOT supported.