HP ProBook 640 G5 docks: one exact USB-C choice, conservative display limits

Which dock options should you consider?

For HP ProBook 640 G5, HP USB-C Dock G5 (5TW10AA) is the documented USB-C desk choice: HP's July 2020 compatibility sheet names this exact notebook. Use the dock's attached host cable and its rear DisplayPort or HDMI outputs, following the G5 setup record for the exact regional notebook. Treat one or two ordinary office displays as a conservative troubleshooting baseline rather than a published exact-host maximum. HP's generic G5 tables for dual or triple 4K depend on host DisplayPort bandwidth, DSC and dock display mode that the accessible exact-host evidence does not establish. No second dock family is recommended here: require an accessible exact manufacturer row plus separate display and power qualifications instead of inferring from HP branding or connector shape.

Connect displays and power

Host connection

Power 5TW10AA, then connect its attached USB-C host cable directly as HP's Dock G5 setup requires; stop and verify the exact regional manual if the intended USB-C path is unclear.

Display outputs

Use the dock's rear DisplayPort or HDMI output. The dock's front USB-C port is for data and accessory power, not a monitor.

First display

Begin with one known-good FHD60 screen, select its input and use a direct cable without an intermediate hub or converter.

Second display

Add a second ordinary office display only after the first is stable. The reviewed exact-host evidence does not establish dual-4K, triple-4K or a particular mixed-resolution ceiling.

Power

Use the dock's matching supply and attached host cable. Keep the notebook's original HP adapter available to isolate charging; the dock supply rating is not the notebook's negotiated wattage.

First recovery steps by symptom

Nothing on the dock works

1. Disconnect dock AC, host cable and all peripherals.
2. Restore the dock's matching power supply, then attach its host cable using the exact regional HP setup instructions; stop if the intended host port is unclear.
3. Prove one USB device before reconnecting Ethernet and displays.

The notebook charges but the screen stays black

1. Use one FHD60 monitor, select its input and reseat a direct rear DisplayPort or HDMI cable.
2. Use the operating system's display-detection control and test another documented rear dock output.
3. Update the exact ProBook graphics/USB components and G5 dock firmware before adding a second display.

USB or picture works but the notebook does not charge

1. Confirm 5TW10AA, its matching dock supply and the attached host cable without an extension.
2. Remove high-draw USB accessories and reconnect the powered dock.
3. Compare with the original HP adapter; if direct charging succeeds, update dock firmware and treat the dock power path as the fault branch.

One screen works but a second does not

1. Return both screens to an ordinary FHD60 mode and disconnect adapters.
2. Add the second screen through another documented rear dock output after the first is stable.
3. Stop short of generic dual-4K or DSC claims; the exact host's combined ceiling remains unpublished in the reviewed evidence.

Still unknown: The exact regional SKU, host USB-C protocol details, installed graphics configuration, negotiated dock wattage, complete ProBook 640 G5 combined-display ceiling, DSC availability, monitor EDIDs, cable or adapter capability, mixed resolution and refresh, HDR/color depth, BIOS, dock firmware, sleep/wake behavior and physical reliability remain unknown. An official exact-host QuickSpecs endpoint was not retrievable during this review, so its port claims and unverified UltraSlim or Thunderbolt Dock G2 details are not presented as guidance. No hardware was tested.

Compare documented options · Check screens and power

Applies only to HP ProBook 640 G5 and the dated exact-model HP USB-C Dock G5 compatibility record. It does not transfer to another ProBook generation or prove current operating-system support. Sources reviewed 22 September 2026. Manufacturer documentation is not a Connect Your Dock hardware test.