Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your MAIWO K305BU3S 4-Bay HDD/SSD Docking Station. This device is designed to provide convenient external storage and data transfer for up to four 2.5-inch or 3.5-inch SATA hard drives or solid-state drives, supporting a total capacity of up to 96TB.
Key Features
- Supports up to four 2.5-inch or 3.5-inch SATA I/II/III HDDs/SSDs.
- Maximum total capacity of 96TB (up to 24TB per drive slot).
- USB 3.0 interface for high-speed data transfer (up to 5Gbps), backward compatible with USB 2.0/1.1.
- Independent power supply for stable operation.
- Vertical design for efficient 360° heat dissipation.
- LED indicators for power and individual drive read/write activity.
- Automatic sleep function to save power.
- Plug and Play functionality with automatic drive detection.
- Compatible with Windows, macOS, and Linux operating systems.
Package Contents
Please check the package carefully to ensure all items are present:
- MAIWO K305BU3S 4-Bay HDD Docking Station
- USB 3.0 A to B Cable
- Power Adapter (5A)
- User Manual (PDF available online)
Note: Hard drives/SSDs are not included.
Specifications
| Feature | Description |
|---|---|
| Product Name | MAIWO 4 Bay HDD Docking Station |
| Model Number | K305BU3S |
| Hard Drive Compatibility | 2.5-inch / 3.5-inch SATA HDD or SSD |
| Supported Capacity | Up to 96TB total (24TB per slot) |
| External Interface | USB 3.0 |
| Transmission Interface | USB 3.0, compatible with USB 2.0/1.1 |
| Transfer Speed | Up to 5Gbps (USB 3.0) |
| Power Supply | External power supply (DC 12V, 5A adapter) |
| Product Dimensions | 163mm * 126mm * 87mm |
| Supported Systems | Windows 98/Me/2000/XP/Vista/7/8/10/11, macOS, Linux |
| Plug Type Options | EU Plug, US Plug, AU Plug, UK Plug |
Setup Instructions
1. Hardware Installation (HDD/SSD)
- Ensure the docking station is powered off and disconnected from your computer.
- Carefully insert your 2.5-inch or 3.5-inch SATA hard drive or SSD into an available drive slot. Ensure the drive is firmly seated and the SATA connectors align properly. The docking station supports both sizes.


2. Connecting to Your Computer
- Connect the provided power adapter to the DC 12V jack on the back of the docking station, then plug the adapter into a power outlet.
- Connect the USB 3.0 A to B cable from the docking station's USB 3.0 port to a free USB 3.0 port on your computer.
- Press the power button on the docking station to turn it on.


Once connected and powered on, your computer should automatically detect the hard drives and initiate "AutoPlay" if enabled. Drivers will typically install automatically.
Operating Instructions
1. Data Read and Write Function
After successful installation and connection, your computer will recognize the inserted hard drives. You can then access them like any other storage device for reading and writing data.

The individual LED indicator lights (A, B, C, D) will illuminate when a drive is inserted and flash during read/write operations.
2. New Hard Disk Formatting and Partitioning
If you are using a brand new hard drive, it will not appear in "My Computer" or "This PC" until it is initialized, formatted, and partitioned. Follow these steps:
- Right-click on "This PC" (or "My Computer" on older Windows versions) and select "Manage".
- In the Computer Management window, navigate to "Disk Management".
- You will see your new disk listed as "Unallocated". Right-click on the disk (e.g., "Disk 1") and select "New Simple Volume".
- Follow the "New Simple Volume Wizard" to specify the partition size, assign a drive letter, and format the volume.
- For drives smaller than 2TB, choose MBR (Master Boot Record).
- For drives larger than 2TB, choose GPT (GUID Partition Table).
- Select NTFS as the file system for Windows compatibility.
- Once the wizard is complete, your new hard drive will be accessible in "This PC".

3. Automatic Sleep Function
The docking station features an automatic sleep function to conserve power and extend drive lifespan. If there is no data activity for a certain period, the drives will enter a low-power sleep mode. Activity will resume automatically upon access.
Maintenance
- Keep the docking station clean and free from dust. Use a soft, dry cloth for cleaning.
- Ensure adequate ventilation around the device to prevent overheating, especially when multiple drives are in use. The vertical design aids in heat dissipation.
- Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Always safely eject drives from your operating system before physically removing them from the docking station to prevent data corruption.
Troubleshooting
- Drives not detected:
- Ensure the power adapter is securely connected and the docking station is powered on.
- Verify the USB cable is properly connected to both the docking station and a functioning USB 3.0 port on your computer.
- Check if the hard drives are firmly seated in their slots.
- If it's a new hard drive, ensure it has been initialized, formatted, and partitioned via Disk Management (refer to "New Hard Disk Formatting and Partitioning" section).
- Try connecting the docking station to a different USB port or another computer to rule out port or system issues.
- Slow transfer speeds:
- Ensure you are connected to a USB 3.0 port on your computer. USB 2.0 ports will result in slower speeds.
- Check the condition of your USB cable; a faulty cable can affect performance.
- The speed of the hard drive itself can be a limiting factor.
- Drive activity lights not working:
- Confirm the docking station is powered on.
- Ensure the drive is properly inserted and detected by the system.
- The lights only flash during active read/write operations; they may be solid or off during idle periods.
User Tips
- For optimal performance, use USB 3.0 ports on your computer.
- Always use the provided power adapter to ensure stable power delivery to all drives.
- When handling hard drives, be gentle to avoid physical damage.
- Consider using drive labels to easily identify which drive is in which slot.
- Regularly back up important data, as external storage devices are still susceptible to failure.
Warranty and Support
This MAIWO product comes with a 1-year warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
For further assistance, FAQs, or more information, please visit:
- Email: info@maiwoasia.com
- Website: www.maiwoasia.com
A digital version of this user manual is available for download at the following link: MAIWO K305BU3S User Manual (PDF)
Product Demonstration Video
Watch this video for a visual guide on setting up and using your MAIWO 4-Bay HDD Docking Station: