Introduction
The Baseus UnionJoy Pro 17-in-1 Docking Station is a versatile connectivity solution designed to expand the capabilities of your laptop or PC. It offers a wide array of ports for ultimate connectivity and functionality, enabling multi-monitor setups, high-speed data transfer, and fast charging. Featuring advanced GaN technology and a powerful chip, this docking station ensures stable and efficient performance for both work and entertainment.

Package Contents
Please check the package for the following items:
- 1 x Baseus UnionJoy Pro 17-in-1 Docking Station
- 1 x USB-C to USB-C Cable (for host connection)
- 1 x GaN Charger (Power Adapter)

Product Overview
The Baseus UnionJoy Pro features 17 ports designed for comprehensive connectivity. Below is a detailed breakdown of the ports:
Front Ports:
- 1 x SD Card Slot: Up to 104MB/s data transfer.
- 1 x TF Card Slot: Up to 104MB/s data transfer.
- 3 x USB-A 3.0 Ports: Up to 5Gbps data transfer.
- 1 x USB-C 3.0 Data Port: Up to 5Gbps data transfer.
- 1 x Power Input Port: 20W Power Delivery (PD) fast charging output.
- 1 x Audio In & Out: 3.5 mm Jack, supports extension to earphones and speakers.
Back Ports:
- 2 x USB-A 2.0 Data Ports: Up to 480Mbps data transfer.
- 1 x PC Port: Connects to your laptop/host device.
- 1 x VGA Port: Supports up to 1080P@60Hz display output.
- 2 x HDMI-Compatible Ports: Supports up to 4K@60Hz display output.
- 1 x DisplayPort (DP): Supports up to 8K@30Hz, 4K@120Hz display output.
- 1 x DC Port: 20V power input for the docking station.
- 1 x RJ45 Gigabit Ethernet Port: Up to 1000Mbps network speed.


Setup Instructions
- Power Connection: Connect the included GaN Charger to the DC Port (20V) on the back of the docking station, then plug the charger into a power outlet.
- Host Connection: Use the provided USB-C to USB-C cable to connect the PC Port on the back of the docking station to a compatible USB-C port on your laptop or PC.
- Display Connection: Connect your monitors to the available HDMI, DisplayPort (DP), and/or VGA ports on the docking station using appropriate cables.
- Peripheral Connection: Connect your USB devices (keyboard, mouse, external drives), SD/TF cards, and audio devices to the corresponding ports on the front and back of the docking station.
- Network Connection: For a stable wired internet connection, connect an Ethernet cable from your router to the RJ45 Gigabit Ethernet Port on the back of the docking station.

Operating Instructions
Multi-Display Functionality
The UnionJoy Pro supports extending your display across up to four monitors for enhanced multitasking and efficiency.
- Windows Systems: Supports Multi-Stream Transport (MST) mode, allowing for extended desktop across multiple displays.
- macOS Systems: Supports dual display and mirror mode only. MST mode is not supported on macOS.
Display Resolution Guidelines:
- The DisplayPort (DP) interface supports up to 8K@30Hz output, and is downward compatible with 4K@120Hz, 4K@60Hz, and 4K@30Hz.
- To achieve 8K@30Hz display content, ensure that the USB-C port of your host device supports DisplayPort 1.4 (DP1.4).
- If your device's USB-C port only supports DisplayPort 1.2 (DP1.2), the maximum resolution will be limited to 4K@60Hz.


Data Transfer
Utilize the USB-A 3.0 and USB-C 3.0 ports for super-fast data transfer rates of up to 5Gbps. The SD and TF card slots also provide quick access to your media with speeds up to 104MB/s.

Fast Charging
The docking station, powered by its 130W GaN charger, can deliver up to 20W PD fast charging output from its dedicated Power Input Port to your devices, such as smartphones. It also supports power delivery to your laptop (up to 87W Max, depending on the charging device) through the host connection.

Gigabit Network
The RJ45 Gigabit Ethernet port provides a stable and fast wired internet connection, allowing for quick downloads and a smooth online experience at up to 1000Mbps.

Maintenance
To ensure the longevity and optimal performance of your Baseus UnionJoy Pro Docking Station, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the docking station. Avoid using liquid cleaners or aerosols, as they may damage the device.
- Heat Dissipation: The aluminum alloy shell is designed for excellent heat dissipation. Ensure the docking station is placed in a well-ventilated area and that its vents are not obstructed to maintain optimal operating temperature.
- Storage: When not in use for extended periods, store the docking station in a cool, dry place away from direct sunlight and extreme temperatures.

Placement Options
The docking station can be positioned vertically or horizontally to best suit your desktop setup and space requirements.

Troubleshooting
- No Display Output:
- Ensure all display cables (HDMI, DP, VGA) are securely connected to both the docking station and the monitors.
- Verify that the docking station is properly connected to your host device via the USB-C PC Port.
- Check your host device's display settings to ensure external monitors are detected and configured correctly.
- For 8K@30Hz output, confirm your host device's USB-C port supports DP1.4. If it supports DP1.2, the resolution will be limited to 4K@60Hz.
- Multi-Monitor Issues on macOS:
- macOS systems only support dual display and mirror mode. Multi-Stream Transport (MST) for extended desktop across more than two unique displays is not supported.
- Slow Data Transfer:
- Ensure you are using USB 3.0 compatible devices and cables for optimal 5Gbps speeds. USB 2.0 ports will operate at slower speeds (480Mbps).
- Charging Issues:
- Verify that the 130W GaN Charger is properly connected to the docking station's DC Port and a working power outlet.
- Check that your device supports the Power Delivery (PD) protocol for fast charging via the Power Input Port.
- No Network Connection:
- Ensure the Ethernet cable is securely connected to the RJ45 port on the docking station and your router.
- Check your computer's network settings to confirm the Ethernet adapter is recognized and enabled.
Specifications
| Feature | Specification |
|---|---|
| Product Name | Baseus UnionJoy Pro 17-Port Four-Screen Multifunctional HUB Docking Station |
| Model No. | BS-OH039 |
| Color | Gray |
| Input Port | Type-C |
| Input | 20V=6.5A (DC Port) |
| Output | 5V=0.5A, 5V=0.9A (USB Ports) |
| Operating Systems | Windows, Apple OS, Linux, Vista |
| Certifications | CE, FCC, RoHS |
| Total Ports | 17 |
| Interface Type | USB 3.0 Standard |
| HDMI Output | 8K@30Hz (via USB to HDMI), 4K@60Hz (HDMI 1/2) |
| DP Output | 4K@120Hz (DP Display) |
| VGA Output | 1080P@60Hz |
| Multi-Screen Display | Extended Mode, Mirror Mode (Four-Screen MST Display) |
| USB A & Type C Data Speed | 5Gbps |
| RJ45 Ethernet | Gigabit Ethernet, 1000Mbps |
| SD/TF Card Speed | 104Mb/s |
| Power Input Port (PD) | 20W PD Fast Charging |
| Audio Jack | 3.5 mm Jack |

Display Output Signal Table

Compatibility
The Baseus UnionJoy Pro is widely compatible with various operating systems and devices:
- Operating Systems: Windows, Apple OS, Linux, Vista.
- Laptops: Apple MacBook Pro (2016-2022), MacBook Air (2018-2022), MacBook with M1/M2 chips; Huawei MateBook series; Lenovo Xiaoxin Air/Yoga/Legion/ThinkPad series; HP OMEN/Victus/Spectre/Elitebook/ZHAN series; Honor MagicBook; Razer Blade/Blade Stealth; Acer ACERNR-SF314-579; Xiaomi Air/Pro series; Dell XPS/Inspiron/G series.
- Tablets: Apple iPad Pro (2018-2022), iPad Air/iPad; Huawei MatePad series; Surface Pro/Go/Book series.
- Phones: Huawei P/Mate series; Honor 30 Pro; OPPO R17 Pro; OnePlus 8 Pro.


User Tips
- macOS Multi-Monitor Setup: For optimal multi-monitor setup on macOS, be aware that only dual display and mirror mode are supported, not MST mode. This means you can extend your desktop to one external monitor and mirror your main display to another, or mirror your main display to two external monitors.
- Achieving High Resolutions: Ensure your device's USB-C port supports DP1.4 for 8K@30Hz display output. Otherwise, if your device only supports DP1.2, the resolution may be limited to 4K@60Hz.
- Powering the Docking Station: The docking station includes a dedicated 130W GaN charger for its power. This reduces reliance on your device's USB-C port for power delivery to the station itself, ensuring stable performance for all connected peripherals and displays.
- Operating System Support: The docking station is compatible with a wide range of operating systems including Windows, Apple OS, Linux (e.g., Ubuntu), and Vista, offering broad usability.
Warranty and Support
The Baseus UnionJoy Pro Docking Station is certified with CE, FCC, and RoHS standards, ensuring compliance with health, safety, and environmental protection regulations.
For technical support, troubleshooting assistance, or warranty inquiries, please refer to the official Baseus support channels or contact your retailer.





