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Use the peripheral Thunderbolt 3 port on the LaCie 1big Dock for:
The peripheral Thunderbolt 3 port on 1big Dock can be used to daisy chain compatible Thunderbolt 3 peripherals, such as hard drives and monitors. If you have another Thunderbolt 3 storage device, make certain to connect it to the daisy chain before adding compatible displays or USB 3.1 (USB-C) devices. See below for an example of the order of devices in a Thunderbolt 3 daisy chain.
USB 3.1 (USB-C) devices can terminate a Thunderbolt 3 daisy chain and should always be the last device. It must be connected to the secondary Thunderbolt 3 port on the preceding device. (The USB 3.1 device will not be recognized if connected to the preceding device’s USB-C port.)
You can daisy chain Thunderbolt 3 devices even when 1big Dock is in power-saving mode. See Operation.
Your 1big Dock part number (P/N) determines your device's power delivery and power pass-through ratings. You can find the P/N on the label located on the bottom of the device.
1big Dock delivers power to your laptop's Thunderbolt port and to compatible devices connected to 1big Dock's peripheral port.
No device connected to peripheral port | ||
Part number (P/N) | Host port | Peripheral port |
P/N ending in 500 | 45W | - |
P/N ending in 501 | 60W | - |
Device connected to peripheral port | ||
Part number (P/N) | Host port | Peripheral port |
P/N ending in 500 | 30W | 15W |
P/N ending in 501 | 45W | 15W |
With power pass-through, you can attach a laptop's USB-C power supply to 1big Dock's peripheral Thunderbolt 3 port and let 1big Dock 'pass' power to the laptop.
Power pass-through | |||
Part number (P/N) | Power pass-through | USB-C power supply connected to 1big Dock peripheral port | Power passed through to 1big Dock host port |
P/N ending in 500 | Available | > 60W and < 85W ≥ 85W |
Up to 50W Up to 70W |
P/N ending in 501 | Not available | N/A | N/A |