From memory, I think the road bends just before the gates so if you missed the bend you would end up driving into the gates.
Incidentally, the grounds are surrounded by an anti tank fence made out of old railway line yet there is a public footpath through the grounds across the driveway.
USB-C is an absolute shit-show. Half a dozen types of identical looking cables all with different performance and compatability. They can be power only, USB-2 only, USB 3, 3.1, 5gb, 10gb. Some can carry 5A, others only 3A. Some may support thunderbolt. Cable sellers and manufacturers can/will claim anything.
For people selling USB-C devices it's a massive support problem. It looks like the device is defective, but someone may just have swapped out the cable for their phone charger cable and there's no way of telling.