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It should work fine on either, but it doesn't really need the speed of 3.0, so no need to sacrifice one of your 3.0 ports.
Sorry, there was a problem. Please try again later.Thank you for your inquiry! The Insignia™ Bluetooth 5.0 USB Adapter is compatible with both USB 2.0 and USB 3.0 ports. However, using it with a USB 3.0 port can provide better performance due to the higher data transfer speeds supported by USB 3.0.
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