ProBook 440 G6 docks: G5 for HDMI, G2 for DisplayPort reuse

Which dock options should you consider?

For HP ProBook 440 G6, HP USB-C Dock G5 (5TW10AA) is the simplest documented choice when the desk needs built-in HDMI plus DisplayPort, while HP Thunderbolt Dock 120W G2 (2UK37AA) is an exact-listed legacy alternative for DisplayPort-based fleets. Use only the 120 W G2 package, not its 230 W or combo-cable charging claims. The reviewed HP evidence establishes model compatibility and up to 100 W host delivery for each supported package, but it does not publish an exact combined-screen table for ProBook 440 G6. Start with one or two FHD60 screens. On G5, higher modes depend on the host DisplayPort revision, DSC and dock display mode; on G2, do not promise rear-Thunderbolt video unless the exact host link is confirmed as Thunderbolt rather than USB-C fallback.

Connect displays and power

G5 connection

Power 5TW10AA, then attach its captive USB-C cable directly to the notebook's video-capable USB-C port.

G5 displays

Use rear DisplayPort or HDMI; the front USB-C socket is data/15 W accessory power. Start with one screen, then a second at FHD60.

G2 connection

Power 2UK37AA with the 120 W supply and connect its documented host cable directly. Begin with the dock DisplayPort outputs.

HDMI on G2

G2 has no built-in HDMI. An HDMI monitor needs a correctly directed DisplayPort/USB-C video adapter rated for the desired mode.

Power

Each documented package advertises up to 100 W to supported HP hosts. Keep the original notebook charger available to distinguish dock power from a display fault.

First recovery steps by symptom

No dock device appears

1. Remove the host cable, dock AC and all peripherals.
2. Reconnect the exact dock's matching power supply, then its supplied host cable directly to the notebook.
3. Verify one USB device before adding network and monitors.

A display stays black

1. Reduce to one FHD60 monitor, select its input and reseat the rear dock video cable.
2. Use Windows Display Detect and test the monitor directly on notebook HDMI.
3. On G2, use DisplayPort first and remove any unverified adapter or rear-Thunderbolt display path.

The notebook does not charge

1. Confirm G5 5TW10AA or G2 2UK37AA, the matching 120 W adapter and the supplied host lead.
2. Remove high-draw accessories and reconnect without an extension cable.
3. Compare with the original HP charger; if it succeeds, update the chosen dock firmware and retest its power path.

The link drops or will not resume

1. Disconnect dock AC and host, then restore dock power before reconnecting the notebook.
2. Install the exact ProBook BIOS, USB/graphics components and the selected dock firmware.
3. Retest with one display and one peripheral, adding devices until the failing branch is isolated.

Still unknown: HP does not publish the exact dock-facing DisplayPort revision, DSC status, combined display ceiling or G2 rear-Thunderbolt fallback behavior for ProBook 440 G6. The installed processor/graphics configuration, monitor EDIDs, cables/adapters, mixed refresh and color depth, HDR, current BIOS and dock firmware, operating-system configuration, actual charge rate, sleep/wake stability and field reliability remain unknown. No hardware was tested.

Compare documented options · Check screens and power

Applies only to HP ProBook 440 G6. It does not transfer to ProBook 440 G7, 430/450 G6 or a similar HP model with different official rows. Sources reviewed 21 September 2026. Manufacturer documentation is not a Connect Your Dock hardware test.