Active cables can operate at 40 Gbps over longer distances.
Passive cables up to 0.5m in length can operate at 40 Gbps,īut if longer will operate at 20 Gbps. Note that there are two types of Thunderbolt 3 cable - Passive and Active. check the speed of the cable being used. check the port speed on the Mac from System Information > Thunderbolt. To resolve the situation, the following steps should be taken: **For the best possible speed and reliability it is recommended to not use Codex Thunderbolt Docks as part of a daisy-chain of devices. possibly devices on another port, if multiple ports share the same Thunderbolt controller. possibly other devices on the same port, if daisy-chained**.
The Thunderbolt connection speed is governed by: In addition, driver/software layers have overhead that limit speeds to below the maximum bus speed. *Note that PCIe over Thunderbolt, as used by Codex Docks, cannot achieve the maximum possible bus speed as Thunderbolt reserves some bandwidth for other purposes such as display devices. This message indicates that the Thunderbolt connection to the Dock is not at the highest possible speed.Ĭodex Thunderbolt Docks having the following connection types: