It's most prominently seen and probably associated with Apple products, going back to the first Macs with Ethernet (the Quadra 700/900). It's also used, bizarrely IMO, as the Android Ethernet symbol.
However, I've also seen it on one other type of computer -- Sun/SPARC systems. And on those systems (1990+), it predates the Apple usage on the Quadra (1991+), with at least my IPC having the <...> symbol for Ethernet over the AUI port. (not sure if Apple's NuBus NICs had it or not). Further, it's used on some of my RDI SPARC systems, with a different font.
Someone had to decide to use this symbol first, and I've always wanted to know who. It's distinct from the "iconography" that everyone else uses for Ethernet, and has survived to this day in its weird little Apple (and Android??) branch.