( CNN ) -- Microsoft may be a relative newcomer to in-store retailing , but it 's getting the hang of this Black Friday thing . The computing giant , with 14 retail stores across the U.S. , is diving into the post-Thanksgiving shopping madness with a slew of substantial new discounts on laptops , phones , software , games and its Kinect gaming system for the Xbox 360 console . The sale begins online Friday at 12:01 a.m. PT , when most Microsoft stores will open , and lasts through Monday . Some of the deals are just available in stores , while others are offered only at Microsoft 's online store . Among them : . -- Sony S137GX notebook : $ 599 , normally $ 999 ( online only ) -- Samsung RC512 laptop running Windows 7 : $ 499 , normally $ 799 . -- Acer Iconia Dual-Screen Touchbook : $ 599 , normally $ 999 . -- Xbox Ultimate Gaming Bundle , which includes accessories , a game and a 90-day Xbox Live membership : up to $ 200 off . -- Kinect Sensor Holiday Bundle , which includes three games : $ 100 , normally $ 150 ( not available online ) -- A free Windows Phone with a two-year service agreement ( the site does n't specify the carrier ) -- Office Home and Student suite of software : $ 120 , normally $ 150 . Microsoft also is cutting prices -- in many cases by half -- on such recent popular Xbox games as `` Assassin 's Creed Revelations , '' `` Battlefield 3 '' and `` Madden 2012 . '' See its Facebook page for an entire list . These discounts are much deeper than those announced Wednesday by rival Apple , which is trimming prices on iPads , iPods and Macs by less than 10 % .
Microsoft is offering Black Friday discounts on laptops , phones , games and Kinect . Some deals are just available in stores ; others are offered only on Microsoft 's retail site . Prices on some laptop models are slashed by $ 400 .