Sony VAIO VGC-LT10 Series Recovery Disc CD.

For VGC-LT10E, -LT11E, -LT12E, -LT13E, -LT15E, -LT16E, and -LT18E.

Factory OS: Windows Vista 32-bit Home Premium.

It will NOT work on any other Sony VAIO desktops nor on any VAIO laptop models.