The reason it will not work among Computer Companies is a BIOS Software check - the stop or go check, like you find with WIFI Cards. I was rarely able to get it to work, I get a warning about wrong software, if it does not crash. For example, I tried HP on Toshiba, it installed yet crashed at every restart. To put the right software in and it performs. When I rarely did get it to work I had HP logos in Dell and Dell Logos in HP and crashed randomly while using it.