I'm specifying a dedicated USB cable for a product, but it won't be a full cable, it will be missing the center conductors. In other words, it is functionally equivalent to a "charge only" USB cable.
What graphic treatment might work, so consumers don't later confuse this with a full USB cable capable of transmitting data?
I've checked with the USB implementors forum, and there's no dedicated logo for this case.
Update in response to all the comments: I'm a consulting engineer, and don't set the project specifications. Here my client wanted the most flexible possible flat cable. My client's needs come first.
The power wires needed to be at least 22 gauge given 2 amp draw over this 2 meter cable (note the unjacketed copper bundles with nylon threads to make up the missing strength). Adding the data wires would add stiffness with no immediate increase in functionality for my client's product needs.
The described cable is meant to power a given product. It's irrelevant what the device does or does not do with data lines.
The UX question on the table is how to mark such cables to lower user frustration later, when the cable gets stuffed in a drawer after the product itself is obsolete.