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User Manual for SIIG 04-1384A Dual Host 4K USB-C KVM MST Docking Station
Quick guide for the SIIG 04-1384A docking station. Learn how to connect dual hosts, use MST video output, manage power delivery, and troubleshoot common connectivity issues.
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The SIIG 04-1384A is a dual-host KVM docking station designed to manage two computers using a single set of peripherals. Key requirements for full functionality include a Windows operating system for MST support and USB-C ports on your host computers that support DisplayPort Alt Mode and Power Delivery. Note that an extra power charger for PC1 PD input is not included in the package.
Features
- Supports dual host switching (PC1 and PC2).
- MST (Multi-Stream Transport) video output for multiple displays.
- USB 5G data transfer speeds.
- Power Delivery: Up to 100W for PC1 (requires extra charger) and 65W for PC2.
- Integrated Gigabit Ethernet and 3.5mm headset jack.
- Compatible with Thunderbolt 3/4 and USB-C hosts.
System requirements
- Host computer with USB Type-C port supporting DP 1.2/1.4 Alt Mode and Power Delivery.
- Windows 10, 8.1, 8, or 7 (32/64 bit).
- Note: MST function is only supported on Windows OS.
Front View
The front panel provides quick access to audio and USB peripherals:
- 3.5mm headset jack: Connects to headsets (audio and microphone).
- USB 5G Type-C ports (x2): Support UASP mode, 5Gbps speed, and 5V/1.5A power output.
- USB 5G Type-A port: Supports UASP mode, 5Gbps speed, and 5V/1.5A power output.
- System indicate LED: Indicates which system (PC1 or PC2) is currently selected.
Rear View
The rear panel contains the primary connectivity ports:
- Power jack: Connects to the included DC 20V/6A power adapter.
- PC1 & PC2 USB-C hosts: Connect to your laptops. PC1 supports up to 100W PD (via extra charger), PC2 supports up to 65W PD.
- Switch In: Port for the 3.5mm switch cable.
- MST video output: HDMI or DisplayPort for video output (up to 3840x2160p@60Hz).
- RJ-45 Gigabit Ethernet port: Supports 1000/100/10 Mbps.
- USB 5G Type-A ports (x2): Support UASP mode, 5Gbps speed, and 5V/0.9A power output.
- PD Input: Port for an extra power charger to enable 100W charging for PC1.
Operation
Use the switch button to toggle between connected computers:
- Short press: Switches between PC1 and PC2.
- Long press (more than 5s): Turns off the display output and USB connection.
Troubleshooting
If you encounter issues, check the following:
- No video output: Ensure your laptop's USB-C port supports DP Alt Mode.
- Charging issues: Verify your laptop's charging specifications; not all laptops require or support 65W/100W input.
- Limited video output: If you only see one video output, you may have reached the bandwidth limit. Refer to the MST Video output table in the manual to adjust resolution settings.
Manufacturer information
SIIG, Inc.
Practical help
Common problems
Laptop not charging at 65W
Check your laptop's charging specifications; not all laptops require or support 65W input.
No video output via MST
Ensure the host computer's USB-C port supports DP Alt Mode.
Only one video output displayed
This is likely a bandwidth limitation. Adjust the video output resolution according to the MST Video output table.
Before use
- Ensure your host computer runs Windows OS for MST support.
- Verify your USB-C port supports DP Alt Mode and Power Delivery.
- Use the included USB-C to C cables for host connections.
- If you need 100W charging for PC1, acquire a compatible extra power charger (not included).
- Connect the power adapter to the DC 20V power jack.
Specs in practice
- PC1 PD Charging
- Supports up to 100W max with an extra power charger.
- PC2 PD Charging
- Supports up to 65W max using the docking station's power adapter.
- USB 5G Ports
- Support UASP mode and 5Gbps data transfer speed.
Images and diagrams
- The front panel features a 3.5mm headset jack, two USB-C ports, one USB-A port, and system indicator LEDs.
- The rear panel includes the power input, PC1/PC2 host ports, switch input, video output, Ethernet, USB-A ports, and PD input.
- The switch button allows toggling between PC1 and PC2 with a short press, or disabling connections with a long press.
Model compatibility
- MST function is only supported on Windows OS.
- Compatible with Thunderbolt 3/4 and USB-C hosts.
- Not all USB-C ports support the full functionality of the USB Type-C standard.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.