ok found 2 drivers.
1:- Realtek Semiconductor Corporation http://support.toshi...reeText=3574909
Posted Date: 2013-10-17 | Version: 2012.1.0712.2013_Logo | Size: 68.54M
2:- Atheros http://support.toshi...reeText=3574909
Posted Date: 2013-10-17 | Version: 10.0.0.263 | Size: 37.45M
not 100% sure which is the correct one for you, i think it might be the atheros driver but you might have to try them both.
to update the driver you need to open device manager then select network adaptors and open your wireless adaptor and go to the driver tab and click update driver.
mmm links don't take you to each individual driver like i thought they would, just the complete list of drivers for your Satellite P875-S7102 but you should see both wireless lan drivers listed there 3rd and 4th drivers down in the list, just click on them to get to the download page.
Edited by terry1966, 19 November 2013 - 04:14 PM.