I bought a cheap pack of 5 colors of 3m electrical tape. Each cable gets one or two pieces of tape:
Data:
White if usb2
Blue if it supports USB 3 data (because 5Gbps USB 3 ports are mostly blue)
Green if TB/USB4/40Gbps
Power:
None if low/no Power Delivery
Yellow for 45W PD
Red for 65W+ PD
You could even do combinations of colors like on resistors.
Might get sticky residue after a few years
Love this, that sounds awesome. Thanks for sharing!
I suggest finding something else, electrical tape starts coming off after a few years, leaving behind sticky residue that's impossible to remove without some kind of solvent. Same goes for masking tape.