Unfortunately, I don’t think that the Thunderbolt 3 Dock Gen 2 supports this double cable / power pass-through (otherwise, I don’t understand why the Thunderbolt 3 Workstation Dock Gen 2 even exists). Therefore, Lenovo introduced a double cable to work around this issue. The reason for this is, that the Thunderbolt 3 power delivery specification allows for a maximum of 100 W to be delivered through the Thunderbolt 3 connection (as Lenard stated in his post). (Image credit: Windows Central) Laptops and tablet hybrids like the Lenovo ThinkPad X1 Yoga are. Nevertheless, you should be able to use the Thunderbolt 3 Dock Gen 2 with the supplied 135 W adapter plugged into the Dock and an additional 135 W adapter (which should have been supplied together with the P1) plugged into the ThinkPad P1 (to charge the laptop). I think the ThinkPad P1 requires the Thunderbolt 3 Workstation Dock Gen 2 for full functionality (i.e. View Deal Choosing the right dock The ideal dock for your Lenovo ThinkPad X1 Extreme depends on what you need to use with. The reason for the additional 230 W plug is probably to reduce production costs, as Lenovo can use the same housing for the Thunderbolt 3 Dock Gen 2 and the Thunderbolt 3 Workstation Dock Gen 2. This dock offers a single USB-A 3.0, RJ45 Ethernet, and two DisplayPorts. The Dock is meant for less power-hungry laptops (e.g. How does the Workstation dock solve this problem?Īs far as I know, the Thunderbolt 3 Dock Gen 2 only supports a single 135 W adapter (which should have been included in the package). This also means that for regular TB3 docks, you need two cables connected for the mobile workstations, instead of just a single cable. If you fail or forget to connect a separate power cable, the notebook will be using battery power. Lenovo ThinkPad X1 Extreme 20MG Docking Station ThinkPad USB-C Dock Tour - YouTube Lenovo - 40AG0090EU - Lenovo ThinkPad Basic Docking Station - Docking. Everything works, displays, peripherals, but there is no power to the notebook. But if you connect the TB3 cable to the ThinkPad P52, it will not deliver power to the notebook. In one of our offices, the standard dock is the TB3 dock. This also means that the docks cannot power Mobile Workstations using only a TB3 connection.įor example, the ThinkPad Thunderbolt 3 dock (pay attention to the name: this is another dock, not the one reviewed in this article!) can be used perfectly well with the ThinkPad P52 I have. The problem is, that the Thunderbolt 3 power delivery standard allows for a maximum of 100W to be delivered through the TB3 connection. The ThinkPad P1 and ThinkPad X1 Extreme require a 135W power adapter, the ThinkPad P52 requires a 170W power adapter and the ThinkPad P72 requires a whopping 230W power adapter. Mobile workstations require more power than the usual laptops (Ultrabooks). ThinkPad TB3 Workstation Dock top Mobile Workstation power requirements
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