Step 1: Connect Huawei P9 to your computer via USB cable, and your computer will recognize it as a removable USB drive.
Step 2:Drag down Notifications panel from the top of your Huawei P9’s screen, connect as "Media device(MTP)". Click"ok" when the "Allow USB debugging" pop out.
Step 3: Ensure Huawei P9'S drive installed succecefully on your computer. Open the Portable Devices and find “DCIM”, where all the photos saved.
Step 4: Select and copy the pictures what you want to transfer from your Huawei P9 to your computer.