A lot of motherboards are now shipping with dual USB 3.0 headers. These headers are bad as the pins can easily get bent. A new connector has surfaced which solves the problem. It has appeared on some high-end Intel boards but I have not see it on AM4 motherboards.
As seen in the image the new type of connector is less likely to have bent pins. The old style headers are bad for bent pins which can take hours as the motherboard has to be removed to properly straighten the pins. PCIe cards with the old style connector are abundant but so far no known cards are being offered with the new connector.
What is more acutely in short supply are USB 2.0 headers. The Corsair HX1000i has a USB port to monitor it’s operation. Card readers also currently use USB 2.0. Other items like Wi-Fi cards want USB 2.0 etc.
The Silverstone CP14 lacks USB power delivery limiting its potential. USB-C supports power delivery from internal or external power sources. The Apple MacBook fully supports USB power delivery.
So the current supply of 2x USB 2.0 headers would be far better served with 4x. This would allow many to use the PSU features.
The DeLOCK 89603 has USB 3.0 ports and it supports both type of cables. It needs a 2 lane slot but otherwise it is one way to deal with new chassis.
The rear IO panel has some needs as well. The keyboard and mouse typically are USB 2.0 but now some boards are using USB 3.0 with more available current. Generally at least 6x type-A ports are needed and one or more type-C are now appearing.
Other peripherals like the USB unit for the Xbox 360 peripherals also needs a port. The wireless Xbox 360 controller is used with some classic and some contemporary games. There is also a USB controller for the Xbox One. So a few IO USB ports are needed for console peripherals.
The MSI X570-A PRO has adequate IO USB ports. It lacks internal USB 2.0 ports. A old chassis like the Cooler Master HAF 932 have front USB 2.0 so this needs more USB 2.0 headers. More recent chassis like the Corsair Obsidian 750D still have front panel USB 2.0 ports.
Removing the serial port header on the MSI X570-A PRO would improve the situation immensely. The fan headers along the bottom are better placed the way they are on the MSI X470 Gaming Plus. This would afford more room for 2 additional USB 2.0 headers and make the X570-A PRO a far better platform for professional needs.
The IO panel on the MSI X570-A PRO is very good. It has a pair of USB 2.0 ports for the keyboard and mouse. There are 5 additional USB-A and one USB-C header which is proportional to the current range of peripherals. There is room for more USB headers which is why adding more USB 2.0 headers is not unwise. If a USB 2.0 hub chip on the motherboard was used, it would solve the problem of the chipset shortcomings.
I have a USB-C box with four USB-A is I use mostly with the MacBook which only has a USB-C port on it. Then I can use my USB DVD drive and install an operating system.