Applies to: HP USB-C Dock G5 / 5TW10AA family. Dock bandwidth table from HP c09126888 v1, February 2025, pages 7–8. Individual laptop GPU, OS and simultaneous-display limits still apply.
A simple two-screen starting arrangement
- Rear DisplayPortDisplayPort cable↓Screen 1 · DisplayPort input
- Rear HDMIHDMI cable↓Screen 2 · HDMI input
This shows the cable positions to try after confirming the laptop supports both screens. It does not promise a particular resolution. Two DisplayPort cables are also an option; a second HDMI monitor needs a correctly directed adapter from a DisplayPort output.
What changes the supported picture modes?
| Target, 60 Hz | Default mode: DP 1.2 | Default: DP 1.3/1.4 | Default: DP 1.4 + DSC | High-resolution mode |
|---|---|---|---|---|
| Two Full HD screens | Listed | Listed | Listed | Listed across DP versions |
| One 4K screen | Not listed in this column | Listed | Listed | Listed across DP versions |
| Two QHD screens | Not listed in this column | Listed | Listed | Listed across DP versions |
| Two 4K screens | Not listed in this column | Not listed in this column | Listed | DP 1.3/1.4 or DP 1.4 + DSC required |
| Three 4K screens | Not listed | Not listed | Not listed | DP 1.4 + DSC required |
Full HD means 1920 × 1080 here; QHD means 2560 × 1440; 4K means 3840 × 2160. HP’s table assumes the host supports the simultaneous display count. These are 60 Hz, 8-bit examples, not HDR or gaming guarantees. An empty source cell means this mode is not established in that column. HP: G5 QuickSpecs c09126888, February 2025, pages 3–8 (HP-authored PDF hosted by Icecat)
Find the missing detail without guessing
- Write down the full laptop model, processor and operating system.
- Check its video-port specification for DisplayPort version and DSC support. Thunderbolt capability does not turn the G5 itself into a Thunderbolt dock.
- Match the current dock/BIOS display setting to the table. If a managed laptop needs a setting change, ask IT to confirm the supported setting and its effect on USB data performance.
- Test each screen alone, then together. Record the offered resolution and refresh rate for both screens while both remain attached.
Ports that commonly cause confusion
| Connection | Use |
|---|---|
| Attached USB-C cable | Computer connection |
| Rear HDMI / two DisplayPorts | Monitor video |
| Front USB-C | Accessory data and up to 15 W; not the monitor route |
| 120 W adapter | Powers the dock; up to 100 W can reach a supported HP host, not 120 W |
HP states a lower, up-to-75 W host ceiling on non-HP systems. Keep a workstation’s own supported power arrangement if it needs more than the dock can deliver.
If the second screen loses 4K60
Keep one variable at a time. Lower both screens to Full HD, then raise their modes individually. If they work separately but not together, compare the combined bandwidth column before buying cables. For ChromeOS, HP gives a two-Full-HD starting scope; do not apply the three-screen Windows headline to a Chromebook. Check the ProBook generation and USB-C port.
Sources & scope
These instructions combine published references with our proposed diagnostic sequence. This setup has not been physically tested by Connect Your Dock. Manufacturer documents can change; use the exact model and scope linked below.
How we assess evidence