Home Forums Tech Helproom Adding USB 3.0 card to desktop PC Forum Rules | Contact Forum Editor | Report a Post Pages 1 2 >> Next… Adding USB 3.0 card to desktop PC Gummomarx 13:21 20 Feb 2018 Locked Answered I want to add USB 3.0 capability to my desktop PC. How will I know which card to buy in terms of compatibility with the machine (HP Workstation xw8400 Base Unit)? Fruit Bat /\0/\ 13:38 20 Feb 2018 click here should fit and comes with a molex power cable adaptor wee eddie 15:12 20 Feb 2018 I am just wondering if USB 3 is a step too far for Windows XP Govan1x 16:04 20 Feb 2018 Have to agree with wee eddie it may be a step to far for an XP computer. Govan1x 16:22 20 Feb 2018 Reading Fruit Bat /\0/\ click here it does say compatible with XP but it also says this. Notice: Windows XP and Vista Users Please Note: Due to OS limitations, the real transfer speed after installation of the respective drivers will be located between the level of USB 2.0 and 3.0. So I suppose is it worth the expense probably not. But if Fruit Bat /\0/\ says that it will work it probably will. beeuuem~2 18:27 20 Feb 2018 I see no reason why it shouldn't work. These are the results SanDisk Extreme 64 GB USB Flash Drive USB 3.0 in XP src and W7 src beeuuem~2 18:29 20 Feb 2018 Gummomarx 19:27 20 Feb 2018 Thanks very much for your kind considerations - particularly indebted to *Fruit Bat /\0/*. PS: I've been running Win 7 successfully on the PC. Govan1x 23:18 20 Feb 2018 I make it your computer is about 12 years old so hope it works ok for you. Gummomarx 11:44 21 Feb 2018 It still flies along, thanks. Gummomarx 13:22 21 Feb 2018 One more thing - I have several USB extension cables - will they inhibit the expected USB 3.0 speed levels? Or, do I need to buy USB 3.0 extensions? Pages 1 2 >> Next… This thread is now locked and can not be replied to.