While internal sound cards tend to work very well, the drawback is they are only limited to PCs due to their PCIe expansion bus interface. However, if you get Creative’s Sound BlasterX G6 ...

This wasn’t an accessible PCIe bus normally available in things like desktop computers for expansion cards, though ... [George] is showing us a way to interface with this bus.

Graphics cards are still taboo, but Sonnet has the first PCIe enclosures for Apple Silicon with TB5 on offer. There are four models.

The new Pi offered a number of compelling hardware upgrades, including an onboard PCI-Express interface. The only problem was that the PCIe interface was dedicated to the USB 3.0 controller ...