Have you installed Service Pack 1? I know Pre-SP1 has limited support for USB 2 onboard hubs, I had the same problem with mine. I installed SP1 and ran through the driver wizard and it found drivers for the onboard USB.
Huawei P10 review
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New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.