If you have sata II and Sata III in the computer which speed does it run at?

Hello,
f you have sata II and Sata III in the computer which speed does it run at?
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  1. It depends on what controller you have the device installed on.

    Examples
    1) A SATA II device on a SATA II port = SATA II speeds and a SATA III device on a SATA III port = SATA III speeds on the same motherboard.

    2) A SATA II device on a SATA II port = SATA II speeds and a SATA III device on a SATA II port = SATA II speeds on the same motherboard.

    3) A SATA II device on a SATA III port = SATA II speeds and a SATA III device on a SATA III port = SATA III speeds on the same motherboard.

    Basically, the drive will run at the SATA controllers speed, be it SATA II or SATA III, along with mixed controllers being used.
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