KT4004と4005についてはApple公式のディスカッションやMac Rumorsにも書いてあるから自己責任で好きな方買えば良いんじゃないかな

特にRumorsのは参考になるから

Upgrading Mac Pro to USB 3.0
https://forums.macrumors.com/threads/usb-3-x-pcie-cards-for-classic-mac-pro.1501482/

The KT4004 uses the same chip that the 2013 Mac Pro uses. This is a big advantage because Apple themselves will include and keep the drivers up to date with each MacOS release.



Q: Make the Inateck USB 3 KT4005 work with Mac Pro 5.1
https://discussions.apple.com/thread/7959207