Anker 568 / A8399 (USB4): ports, screens and setup

Identify this exact dock

Three screens at 4K30 is different from three at 4K60. Write down both resolution and refresh rate before choosing this dock.

Match the complete model printed on the unit. Windows 10 or later; Anker excludes MacBooks. Triple-display guidance specifies up to 4K30. Anker 568 A8399: Windows-only applicability and triple-display modes

Which port is for what?

This is a functional port reference, not a drawing of the physical socket positions. Follow the labels on your unit. Anker 568 A8399: Windows-only applicability and triple-display modes

Before connecting

Up to 100 W through the host port; use the included 180 W supply and specified USB4 cable.

Use the intended powered-dock setup and host cable. Record each monitor’s input, resolution and refresh rate. Keep those requirements separate from the dock’s total port count.

Bring the desk up one screen at a time

1. Connect the specified power supply to the dock.
2. Connect the laptop using usb4 upstream port.
3. Attach one screen on a listed video path and select its wired input.
4. Confirm the operating system recognizes that screen before adding another supported screen.
5. Select the required modes and an extended desktop where supported. Check charging, reconnecting and your essential applications.

A useful check when something fails

If a screen is offered only 30 Hz when three are connected, compare the published triple-display mode before treating it as a fault. Test with one screen to separate an individual cable issue from the combined mode limit.

Change one part of the arrangement at a time. Keep a note of the working monitor, cable and port so you can reproduce the result. If the remaining requirement has no documented answer, ask the manufacturer about the exact models instead of assuming the entire dock is defective.

Is it worth buying or replacing?

This is not a MacBook shortlist option. For a shared Mac/Windows desk, compare the other documented routes rather than assuming a USB4 connector makes the Anker 568 suitable for both.

Use the setup checklist to compare complete arrangements, including any adapters and separate charger. The evidence here is documentation-based; Connect Your Dock has not physically tested this desk.