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Tier 5 (Pictures: two unusual USB plug ends, a Mini-A and Micro-A plug): USB 1.0, Mini Type-A, Female Type C to Male Type-A is Forbidden, Micro Type-A, USB 1.1. Tier 6 (Picture: an unusual port on a computer that appears to be a wider USB-A port, labeled eSATA + the USB Symbol.) HDMI Alt Mode, USB-eSATA Hybrid Ports, Ajay Bhatt, Other Type-A Port Colors, Hazardous cable designs (A to A, B to B, etc)
Tier 7 (Picture: The bottom of a cash register with two standard RJ45 ports and three unusual ports. The first one is a peachy red, labelled “24 Volt USB”, and is three times taller than a standard USB-A port. The other two are labeled “12 volt USB” and appear similar to the 24 Volt USB one but are painted a pale blue.