Just looked at the Aorus Elite X570 vs Z490. Both have 10 USB ports on the read IO. They're pretty much identical boards, feature wise. The Z490 costs £15 more. Both support PCIE 4.0. But yeah, I agree that while yes, you can be cheaper on AMD, Z490 boards simply cost more because they're better boards than B450. They should be compared to X570 boards. Problem is, while we both agree Z490 shouldn't be compared to B450, they always are. Yes, B450 is cheaper. There's a reason for it.