I can understand. We still have a drawer full of different console cables with a couple of USB-RS-232 converters.

Our tradition during new hardware installs, yelled through the datacenter over CRAC, wind and fan noise:

A: You said blue one, but it's not connecting to $NETWORK_DEVICE

B: Try the other, slightly darker blue one, with the sticker XYZ. That's the one I used IIRC.

A: Oh, OK.