One is a usb symbol the other is a trident. Just because satanists use those symbols doesn't make the symbol satanic. Otherwise every symbol on your keyboard is satanic and you are a satanist for using those symbols.
Yeah, we need to make the connections and learn their symbolic language. Just don't get lost is the symbols themselves: They are just symbols, you charge every symbol you use as do they.
USB:
The arrow represents serial data, the bits (1s and 0s) that make up all the information. The circle represents 5V, the voltage that USB works at and the Square represents ground voltage.
In saying that who every designed it may very well have been inspired by Poseidon's trident or any other trident that has been imagined.