How does Thunderbolt work | HomeKit Australia

How does Thunderbolt work

Thunderbolt combines PCI Express and Mini DisplayPort into a combined serial data interface.

  • Thunderbolt 1 implementations had two channels, each with a transfer speed of 10 Gbps, resulting in an aggregate single directional bandwidth of 20 Gbps.
  • Thunderbolt 2 used link aggregation to combine the two 10 Gbit/s channels into a single bi-directional 20 Gbps channel.
  • Thunderbolt 3changed to a compatible USB-C connector and has one 40 Gbps channel. With the older Thunderbolt standards, the cable was active, meaning the cable itself is a device that requires power to operate (which is why most Thunderbolt 1 or 2 devices would require an external power source in order to function.) This made Thunderbolt a much more expensive solution, as the cable could cost many times the price of a competing USB-C cable.

Thunderbolt 1 & 2 used a Mini DisplayPort connector prior to Thunderbolt 3 adopting the USB-C compatible connector.

Thunderbolt 4 continues to use the same connector, offering high-speed storage, high-res monitors, and Thunderbolt docking stations or Thunderbolt hubs. Thunderbolt 4 can daisy chain up to six connected devices.

Whilst USB4 transfers data from 20-40Gbps, Thunderbolt 4 is firmly 40Gbps.

We are seeing many new Apple products feature Thunderbolt 4, including the latest iPad Pro. Many PC laptops are now shipping with Thunderbolt 4, especially those based around 11th generation Intel Core CPU’s.

At HomeKit Australia, we love the Thunderbolt interface and take real satisfaction in making new performance Thunderbolt products available to you.

HomeKit Australia is 100% Australian owned and operated and we use every Thunderbolt product we sell, ourselves ..... thanks for stopping by our Thunderbolt online store.