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HP

HP 3YE87AA#ABA Thunderbolt Dock 120W G2 Audio

★★★★★3.8 (105 reviews)
120WUSB 3.0

Single-cable Thunderbolt 3 connectivity delivers up to 40Gbps bandwidth, 120W charging, and full peripheral expansion for HP notebooks from one compact dock.

$67.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The HP Thunderbolt Dock 120W G2 (3YE87AA) is a single-cable docking station that transforms a compatible HP notebook from a portable device into a stationary workstation in one Thunderbolt 3 connection. The 40Gbps Thunderbolt 3 bus is the technical foundation — it provides sufficient bandwidth to simultaneously run dual external displays (via DisplayPort and VGA), four USB 3.0 peripherals, Gigabit Ethernet, and audio, while simultaneously delivering up to 120W of charging power back to the notebook. That 120W figure is significant: it covers HP's ZBook workstation-class notebooks, which can draw more power under load than the 65–90W typical of lighter docking solutions.

The dock is purpose-built for HP's professional notebook lineup — EliteBook, ProBook, Elite x2, and ZBook. For IT departments and enterprise buyers standardizing on HP hardware, the native certification means predictable behavior and supported warranty paths. Physically, the dock is compact enough for corner-of-desk placement and the build quality is appropriate for daily commercial use. The inclusion of both DisplayPort and VGA outputs acknowledges mixed monitor environments where legacy displays are still in service. For the single-cable convenience benefit to fully materialize, the host notebook must support Thunderbolt 3 — USB-C-only systems should look at USB-C docking alternatives instead.

Key Features

Connectivity Technology: Wired

Device supported: notebook

Host interface: USB Type C

Total Number of USB ports: 4

Number of USB 3.0 ports: 3

Specifications

Connectivity Technology
Wired
Device Supported
Notebook
Host Interface
USB Type C
Total USB Ports
4
USB 3.0 Ports
3
Power Output
120W
Model Series
Thunderbolt Dock G2 Audio

Pros & Cons

👍 Pros

  • 120W power delivery through a single Thunderbolt cable eliminates the separate notebook AC adapter, reducing cable clutter on the desk to a single connection point.
  • Three USB 3.0 ports at 5Gbps each provide enough throughput for external drives, peripherals, and hubs without creating a bottleneck on the dock's USB bus.
  • Gigabit Ethernet via the RJ-45 port delivers stable, low-latency wired networking that Wi-Fi cannot match for large file transfers or video conferencing reliability.
  • Thunderbolt 3's 40Gbps bandwidth handles simultaneous dual displays, USB devices, and network traffic without visible degradation across any connected peripheral.
  • Compact form factor at 3.9 x 3.9 x 4.5 inches keeps desk footprint minimal compared to full-width docking stations — appropriate for tighter workstations.

👎 Cons

  • Full 120W charging and complete feature certification are limited to specific HP notebook lines — non-HP Thunderbolt 3 laptops will connect but may receive reduced charging wattage and unvalidated feature behavior.
  • Four USB ports total is on the low end for power users with multiple peripherals — a USB hub will likely be needed to avoid port competition.
  • The VGA port is a legacy analog output unsuited for high-resolution or high-refresh display setups — a second DisplayPort or HDMI output would be more useful for modern monitor configurations.
  • At 2.01 lbs, the dock is heavier than budget USB-C alternatives — not a concern for a fixed desk, but relevant for users who move the dock between locations.
  • Thunderbolt 3 host requirement is strict — USB-C-only laptops without Thunderbolt will receive severely limited functionality, making this dock a poor value outside the intended HP Thunderbolt ecosystem.

Frequently Asked Questions

The dock uses Thunderbolt 3, which provides up to 40Gbps of bidirectional bandwidth over a single USB-C cable. That headroom is what allows the dock to simultaneously handle dual external displays, USB peripherals, Gigabit Ethernet, and audio without bottlenecking. On a Thunderbolt 3-capable HP notebook, the dock essentially converts one laptop port into a full desktop workstation connection.
The dock delivers up to 120W of power delivery back to the host notebook through the Thunderbolt cable — sufficient for HP's EliteBook, ProBook, and ZBook models, including higher-draw workstation notebooks. This eliminates the separate AC adapter from your desk entirely. Note that maximum 120W delivery is only achievable with compatible HP notebooks; non-HP systems may receive reduced charging wattage.
HP lists compatibility with the ProBook, EliteBook, Elite x2, and ZBook series notebooks that have Thunderbolt 3 ports. Non-HP laptops with Thunderbolt 3 will physically connect and may work for USB/display functions, but the 120W charging and full feature support are validated specifically for HP's lineup. Check your specific notebook model against HP's compatibility matrix before purchasing.
Yes — the dock provides both DisplayPort and VGA outputs, which can drive two external displays in addition to the laptop screen. The Thunderbolt 3 bandwidth headroom supports this configuration without noticeable display latency. Note that VGA is an analog output capped at lower refresh rates and resolutions compared to DisplayPort — for high-resolution or high-refresh setups, prioritize the DisplayPort connections.
The dock provides four USB ports total — three USB 3.0 ports (up to 5Gbps each) and one additional USB port. For a typical desk setup with keyboard, mouse, external drive, and webcam, the four ports are adequate. Power users running multiple high-throughput USB devices simultaneously may find the port count limiting compared to larger docking stations with six or more USB ports.

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