i replaced a 250GB Samsung SSD with this 240 after the SATA connector broke in the Samsung. a new Samsung was much more expensive so i took a chance on Kingston. shows 222GB total space. 10 min physical install in spare drive bay and 30 min with a recovery USB to load windows and set up. did not have to do anything in BIOS. have noticed that boot up takes about 5 seconds more than Samsung but still way faster than the old HDD which took minutes. webpages load fast. first day - happy so far.