Hi Cholasimmons,
Thank you for visiting Sony Community!
Your Sony Vaio VPCSB28GG appears to be a non-U.S. model. Unfortunately. we do not have the complete details on this model. For further assistance, we kindly recommend visiting our Sony Global Website for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Vincent
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