This copper-based version of the Light Peak concept was co-developed by Apple and Intel. However, it was discovered that conventional copper wiring could furnish the desired 10 Gbit/s per channel at lower cost. It was initially marketed under the name Light Peak, and after 2011 as Silicon Photonics Link. The interface was originally intended to run exclusively on an optical physical layer using components and flexible optical fiber cabling developed by Intel partners and at Intel's Silicon Photonics lab. Thunderbolt can be implemented on PCIe graphics cards, which have access to DisplayPort data and PCIe connectivity, or on the motherboard of new computers with onboard video, such as the MacBook Air. When connected to a Thunderbolt device, the per-lane data rate becomes 10 Gbit/s and the four Thunderbolt lanes are configured as two duplex lanes, each 10 Gbit/s comprising one lane of input and one lane of output.
When connected to a DP-compatible device, the Thunderbolt port can provide a native DisplayPort signal with four lanes of output data at no more than 5.4 Gbit/s per Thunderbolt lane. Thunderbolt is interoperable with DP-1.1a compatible devices. Ī single Mini DisplayPort monitor or other device of any kind may be connected directly or at the very end of the chain. A single Thunderbolt port supports up to six Thunderbolt devices via hubs or daisy chains as many of these as the host has DP sources may be Thunderbolt monitors. Thunderbolt controllers multiplex one or more individual data lanes from connected PCIe and DisplayPort devices for transmission via two duplex Thunderbolt lanes, then de-multiplex them for use by PCIe and DisplayPort devices on the other end.
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Thunderbolt 2 port on MacBook Pro with Retina display. Thunderbolt 1 and 2 use the same connector as Mini DisplayPort (MDP), whereas Thunderbolt 3 and 4 reuse the USB-C connector from USB. Up to six peripherals may be supported by one connector through various topologies.
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Thunderbolt combines PCI Express (PCIe) and DisplayPort (DP) into two serial signals, and additionally provides DC power, all in one cable. It was initially marketed under the name Light Peak, and first sold as part of an end-user product on 24 February 2011. It has been developed by Intel, in collaboration with Apple. Thunderbolt is the brand name of a hardware interface for the connection of external peripherals to a computer. HS1TX(P) of the source is connected to HS1RX(P) of the sink. The cable is actually a crossover cable, it swaps all receive and transmit lanes e.g. This is the pinout for both sides of the connector, source side and sink side. Thunderbolt 4: 4× PCI Express 3.0, DisplayPort 2.0, USB4 Thunderbolt 3: 4× PCI Express 3.0, DisplayPort 1.2 (2 streams), USB 3.1 gen. Thunderbolt 2: 4× PCI Express 2.0, DisplayPort 1.2 Thunderbolt 1: 4× PCI Express 2.0, DisplayPort 1.1a Thunderbolt 3: 40 Gbit/s bidirectional, 80 Gbit/s one way Thunderbolt 1: 2 channels, 10 Gbit/s each (20 Gbit/s in total)
Via DisplayPort protocol or USB-based external audio cards.
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