# Can you use USB 2.0 card on USB 1.1 computer?

**URL:** <https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440>\
**Category:** Factual Questions\
**Created:** [April 28, 2004, 4:53am UTC](https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440 "2004-04-28T04:53:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\
**Post date:** [April 28, 2004, 4:53am UTC](https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440/1 "2004-04-28T04:53:26Z")

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Hi,  
I’ve got 2 newish computers (P4-2.4 and Athlon2ghz) and a new USB CD-burner I’ve borrowed and used with them seems to only run at USB 1.1 speed. BTW, how can I tell if I’ve got USB 1.1 ports or USB 2.0 ports already? Assuming I’ve got USB 1.1, could I use a USB 2.0 PCI card to get some USB 2.0 ports?  
Thanks.

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**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://boards.straightdope.com/u/astro)\
**Post date:** [April 28, 2004, 4:57am UTC](https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440/2 "2004-04-28T04:57:11Z")

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Yes. They will work fine and give you 2.0 port speeds.

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**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\
**Post date:** [April 28, 2004, 4:59am UTC](https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440/3 "2004-04-28T04:59:06Z")

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Well according to my P4 motherboard manual it has USB 2.0… but the manual for the other motherboard doesn’t specify what kind of USB is used (BTW I got for a duron 800 though now use it for athlon 2ghz). I think that USB cd burner might have been going slow because I was using 4x rewriteable CD’s - which force the CD burner to go really slowly…  
So I guess I’ve got some USB 2.0 ports (at least on one computer)…

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**Author:** ![JohnClay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@JohnClay](https://boards.straightdope.com/u/JohnClay)\
**Post date:** [April 28, 2004, 5:00am UTC](https://boards.straightdope.com/t/can-you-use-usb-2-0-card-on-usb-1-1-computer/242440/4 "2004-04-28T05:00:08Z")

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thanks astro.