There is no standard what red USB A ports mean. Could be fast charging through some proprietary protocol or other special features. Or just a design choice.
USB ports with no symbol just don’t advertise what they’re capable of. Most phones support super speed data transfer. Basic USB-PD and display port output support is also common. They may also support other stuff, like pretending to be a webcam, audio output and much more. But you usually have to look in the manual or data sheet to know what is supported.
ulterno@lemmy.kde.social 2 months ago
On desktop PCs, Depending upon the Motherboard manufacturer and model series, it could either mean nothing other than some gaming marketing jargon or…
When a motherboard has both red and blue ports, the Red ones could be those connected directly to the CPU lanes for USB, with the blue ones being routed through the PCH.
If there is just one red coloured USB A port, it might be designated for BIOS updates (unless they have another colour for that).