notsleep :
why in 2016 do motherboards still have usb 2.0 ports?
Just to name a few reasons...
1. USB 3.0 ports require drivers and are typically not useable until the system boots.
2. USB 3.0 requires more bandwidth, which would require a significant increase in total system bandwidth if we were to replace USB 2.0 entirely with USB 3.0.
3. USB 2.0 works perfectly fine for a large assortment of devices, with USB 3.0 only gaining any real advantage in devices that can make use of more than 40 Mbps.
4. Some devices have difficulty operating when connected over USB 3.0.
5. USB 3.0 internal headers for ports located on the case are considerably larger than USB 2.0 headers. Replacing all USB 2.0 headers with USB 3.0 would take up significantly more space on the motherboard, which becomes problematic for the overall motherboard design as that space is required for other components.