What is a USB 'header' (and how is it different from a port)?

With the prevalence of USB devices, it might be easy to mix up USB headers and ports, but there is a key difference between ...
SlashGear

Raspberry Pi Zero WH Adds Pre-Soldered 40-Pin GPIO Header

How much can you cram into a 2.6 in x 1.2 in circuit board? You'd presume not much, but the Raspberry Foundation is trying to prove you wrong. First, it added built-in Wi-Fi to its teeny Raspberry Pi ...
Ars Technica

Name of the IDE connector style?

Parallel ATA (IDE) uses 40 pins, not 26. 26 was for floppies. But it's a standard 40-pin "header" connector. Sometimes called "IDC". CF cards have the PATA interface on a 50-pin connector. I don't ...
Ars Technica

Can you attach multiple USB-C plugs to a single motherboard header?

You could do USB header -> Hub -> Extensions and then expose each extension externally I suppose, but it would not be pretty. While it won't use your motherboard's USB-C header, there are PCIe header ...