The design for the new reversible USB interface - the standardised connection for data transfers between electronic devices - has been finished.
It means users will no longer have to worry which way round the part is facing when plugging it into a device.
The new USB Type-C is small enough for mobiles but "robust enough for laptops and tablets", its designers said.
But the new USB cables will not connect into the current ports that are found on millions of devices.
Specifications are now finalised but the rollout will take time as matching ports are included in new devices.
Pictures of renderings of the new USB were first posted online by tech websites such as Cnet.