Why use a port replicator for a laptop?
A port replicator is an ideal tool for quickly turning a laptop into a full workstation. It lets you centralise the connection of several essential peripherals: external monitor, keyboard, mouse, hard drive, network connection, and more. This is particularly useful for laptops with only a few ports.
To work, it needs a USB 3.0 connection. There are also more modern models using USB-C technology, which will be covered in a separate review.
Three models tested in this review
This comparison looks at three port replicators currently available on the market:
- A compact model from one brand (ref. PR7.1)
- A docking station referred to as Pro Dock
- A third model known as 3005pr
Comparison table of technical specifications
| Model | Main connection | Video outputs | USB ports | Audio connections |
| PR7.1 | USB 3.0 (type B) | HDMI, DVI | 2x USB 3.0 (QuickCharge) | Not available |
| Pro Dock | USB 3.0 (type B) | DisplayPort, DVI | 3x USB 3.0, 2x USB 2.0 | 3.5 mm headset/mic |
| 3005pr | USB 3.0 (type B) | DisplayPort, HDMI | 2x USB 3.0, 4x USB 2.0 | Audio in and out jack |
The Pro Dock and 3005pr let you use multiple screens and include audio options. By contrast, the PR7.1 does not offer any audio port, which may be a limitation for certain professional uses.
Operating system compatibility
- PR7.1 and 3005pr: compatible with Windows XP, Vista and later versions
- Pro Dock: usable from Windows 7 onwards, and also compatible with macOS
Box contents
Each port replicator comes with:
- A power adapter from 20W to 65W depending on the model
- A USB 3.0 cable (Type A to Type B)
- Documentation (instructions, product sheets)
Model-specific extras:
- The PR7.1 is the only one to include a driver CD.
- The other two models provide additional video adapters.
Size and footprint
The PR7.1 replicator is the most compact, which makes it ideal for mobile users. The Pro Dock has a moderate footprint, while the 3005pr is twice as bulky, which may be an issue depending on the available desk space.
Test conditions and protocol
Test PC configuration:
- Intel i5-6200 processor (2.7 GHz)
- 8 GB DDR4 RAM
- Crucial SSD to measure USB performance
Measured criteria:
- 2D and 3D display latency
- Ethernet throughput (with iPerf)
- Read/write speed over USB 3.0
Performance results
| Model | 2D latency | 3D latency | Ethernet | USB read/write |
| PR7.1 | Almost imperceptible | Clearly noticeable | 56.5 MB/s (452 Mbps) | 412.9 / 199.2 MB/s |
| Pro Dock | Almost imperceptible | Clearly noticeable | 57.1 MB/s (456.8 Mbps) | 414.8 / 199.6 MB/s |
| 3005pr | Almost imperceptible | Almost imperceptible | 56.4 MB/s (451.2 Mbps) | 412.6 / 198.6 MB/s |
Technical conclusion: all the port replicators deliver solid performance, but only the 3005pr keeps 3D latency under control.
Recommended usage profiles
H3: For everyday use
Thanks to its compact size and low cost, the PR7.1 is perfect for occasional users who value simplicity.
For a flexible and stylish workstation
The Pro Dock offers a wide range of ports with dual monitor output and audio ports. Its reasonable size and matt finish make it both practical and good-looking.
For demanding needs
The 3005pr is recommended for users who want to run 3D applications, connect several screens and benefit from full audio connectivity. Its price is moderate compared with its capabilities.
Overall verdict
- The PR7.1 is a simple, lightweight model suited to everyday use, but limited for more complex setups.
- The 3005pr delivers the best overall performance and is ideal for power users, despite its larger size.
- The Pro Dock offers a good balance of design, compact size and connectivity, even though it sits in a slightly higher price bracket.
