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HP Thunderbolt Dock 280W G4 Review 2026 - Specs, Pros & Cons

7.6 Very Good
Adrian Cel By Adrian Cel

The HP Thunderbolt Dock 280W G4 with Combo Cable is the high-power version of HP's Thunderbolt Dock G4. It uses the same compact 3.9 x 3.9 x 2.7 inch dock body as the 120W model, but swaps in a combo host cable with both USB-C and a 4.5mm barrel connector. On supported HP workstations, that combo cable can feed up to 230W to the laptop while the dock handles Thunderbolt 4 data, displays, Ethernet, and USB peripherals. Non-HP laptops still get USB-C charging, but HP lists that at up to 75W rather than the full workstation power. The port layout is business-first: Thunderbolt 4, HDMI 2.0, dual DisplayPort 1.4, a USB-C DisplayPort output, front USB-C data and charging, four USB-A ports, and 1 Gb or 2.5 Gb Ethernet. HP also includes Sure Start firmware protection, wired vPro management, PXE boot, Wake on LAN, MAC address pass-through, and WLAN-LAN switching for managed fleets. This is not the dock to buy for an ordinary 13-inch ultrabook. It makes sense when you have a power-hungry HP ZBook or similar workstation and want one cable bundle instead of a dock plus a separate laptop charger.

Best for HP Workstations High-Power Business Dock

Pros & Cons

What We Like

  • Combo cable can deliver up to 230W to supported HP workstation platforms
  • Thunderbolt 4 dock supports up to four 4K displays on hosts with DP 1.4 and DSC
  • 2.5 Gb Ethernet plus wired vPro, PXE boot, Wake on LAN, and MAC address pass-through for managed fleets
  • HP Sure Start firmware integrity protection targets enterprise security requirements
  • Same compact cube footprint as the 120W G4 despite the larger power budget
  • No DisplayLink driver required for video output

What Could Be Better

  • Non-HP laptops are limited to 75W USB-C charging

    Workaround: Use this dock mainly with supported HP workstations. For non-HP laptops that need 96W to 140W USB-C charging, choose a standard high-power Thunderbolt dock instead.

  • No audio jack or SD card reader

    Workaround: Use USB audio and a separate USB card reader if those ports matter for your workflow.

  • Some power button, Wake on LAN, and MAC address pass-through features require supported HP notebooks

    Workaround: Check HP's compatibility list before buying for fleet deployment.

  • macOS multi-display support is limited by Apple MST and external display restrictions

    Workaround: Mac users who need multiple extended displays should verify their Mac model's native display support or use a DisplayLink dock.

  • Combo host cable is specialized, so replacing it is not as simple as swapping a generic Thunderbolt cable

    Workaround: Route the cable with strain relief and avoid tight bends around the barrel connector branch.

Display Support

Max Displays: 4
1 display (Up to 8K@60Hz on a DP 1.4 with DSC Thunderbolt host, subject to notebook and monitor capability.)
7680x4320 @ 60Hz
2 displays (Dual 4K@60Hz on DP 1.3/1.4 Thunderbolt hosts or DP 1.4 with DSC hosts.)
3840x2160 @ 60Hz
3 displays (Triple 4K@60Hz requires a DP 1.4 with DSC host. Lower-bandwidth hosts fall back to lower refresh rates or lower resolutions.)
3840x2160 @ 60Hz
4 displays (Quad 4K@60Hz requires DP 1.4 with DSC and four DisplayPort streams. HP states external monitor support depends on platform capabilities.)
3840x2160 @ 60Hz

Ports & Connectivity

USB Ports

1x USB-C 3.2 15W
1x USB-C 3.2
2x USB-A 3.2 7.5W
2x USB-A 3.2

Video Outputs

2x DisplayPort 1.4
1x HDMI 2.0
1x Thunderbolt 4
1x USB-C DisplayPort Alt Mode

Network

1x Ethernet (1 Gbps / 2.5 Gbps)

Full Specifications

General
Manufacturer HP
Model 4J0G4AA#ABA
Release Date 2022-06
Connectivity
Host Connection Thunderbolt 4
Max Data Rate 40 Gbps
Driver Required No (native)
Display Output
Max Displays 4
1x Display 7680x4320 @ 60Hz (Up to 8K@60Hz on a DP 1.4 with DSC Thunderbolt host, subject to notebook and monitor capability.)
2x Display 3840x2160 @ 60Hz (Dual 4K@60Hz on DP 1.3/1.4 Thunderbolt hosts or DP 1.4 with DSC hosts.)
3x Display 3840x2160 @ 60Hz (Triple 4K@60Hz requires a DP 1.4 with DSC host. Lower-bandwidth hosts fall back to lower refresh rates or lower resolutions.)
4x Display 3840x2160 @ 60Hz (Quad 4K@60Hz requires DP 1.4 with DSC and four DisplayPort streams. HP states external monitor support depends on platform capabilities.)
Ports (11+ total)
USB-C 3.2 1x (15W)
USB-C 3.2 1x
USB-A 3.2 2x (7.5W)
USB-A 3.2 2x
DisplayPort 1.4 2x
HDMI 2.0 1x
Thunderbolt 4 1x
USB-C DisplayPort Alt Mode 1x
Ethernet (RJ45) 1x 1 Gbps / 2.5 Gbps
Power
Power Input DC-barrel
Laptop Charging Up to 230W

Compatibility

Windows (10 (19H1)+)

Best support on HP commercial notebooks and workstations. QuickSpecs list Windows 10, Windows 11, Windows 10 IoT Enterprise LTSC 2021, and enterprise management features such as wired vPro, PXE boot, Wake on LAN, and MAC address pass-through.

macOS (12.1 (Big Sur/Monterey era per HP QuickSpecs wording)+)

Basic connectivity is listed, but HP says it does not provide Ethernet and audio drivers for Mac PCs. Multi-display behavior is limited by macOS MST support and the Mac's native external display limits.

Linux (Ubuntu 20.04 LTS with 5.14 kernel+)

Listed in HP QuickSpecs. Firmware and management behavior may vary by host platform.

ChromeOS (M101+)

Listed by HP for ChromeOS systems with compatible Thunderbolt or USB-C host support.

Known Issues

Non-HP laptops

Limited charging and management features

USB-C hosts without Thunderbolt bandwidth

Reduced display capability

Base Apple Silicon MacBooks

Limited external displays

7.6 /10

Our Verdict

Very Good

The HP Thunderbolt Dock 280W G4 is a specialist dock, and that is the point. For supported HP workstations, the combo cable is cleaner than running a standard Thunderbolt dock beside a separate barrel charger. The dock can provide up to 230W to HP platforms, supports up to four 4K displays when the host has enough DisplayPort bandwidth and DSC, and keeps the enterprise features IT teams expect from HP docks. The trade-off is that most of the value disappears outside that HP workstation setup. Non-HP systems are limited to 75W USB-C charging, some management features do not work, and macOS still has the usual MST limitations. It also has no audio jack or card reader, and the host cable is not a generic removable Thunderbolt cable. If you use a ZBook that needs more than 100W, this dock is the right G4 variant. If your laptop charges over regular USB-C, the 120W G4 or a broader dock like the CalDigit TS4 is usually easier to justify.

Available at Amazon

Frequently Asked Questions

What is different about the HP Thunderbolt Dock 280W G4 compared with the 120W G4?
The 280W model includes a combo host cable with USB-C plus a 4.5mm barrel connector. On supported HP platforms, that lets the dock deliver up to 230W to the laptop. The 120W model is aimed at systems that can charge through regular USB-C power delivery.
Does the HP Thunderbolt Dock 280W G4 charge non-HP laptops at 230W?
No. HP QuickSpecs list up to 230W only on HP platforms with the 280W version through the combo cable. Non-HP laptops are listed at up to 75W over USB-C.
How many monitors does the HP Thunderbolt Dock 280W G4 support?
HP lists support for up to four 4K displays, but only on hosts with the required DisplayPort bandwidth and DSC support. On lower-bandwidth Thunderbolt or USB-C hosts, the dock may be limited to fewer displays, lower refresh rates, or lower resolutions.
Does the HP Thunderbolt Dock 280W G4 use DisplayLink?
No. It uses native Thunderbolt 4 and DisplayPort outputs, not DisplayLink. That means no DisplayLink driver is required, but it also means the dock cannot bypass native display limits on base Apple Silicon MacBooks.
Who should buy the 280W G4 model?
Buy the 280W model if you have a supported HP workstation, especially a ZBook that needs more than 100W. For normal ultrabooks, the 120W G4 or a standard Thunderbolt 4 dock is usually a better fit.

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