4k Fuser Setup
1. Ports & Connections
Port Layout
DC 12V
Power input (12V/2A)
DP Output
Connects to monitor
DP Input 2 (Main PC)
Main PC → Fuser
DP Input 1 (Secondary PC)
Secondary PC → Fuser
USB-C
Debug/upgrade (no video / no power)
Required Items
3× DP 1.4 cables
12V/2A power supply (included)
Monitor with DP input
Compatible GPU on both PCs
2. Pre-Setup Checklist (Critical)
Before powering anything on:
✔ Use DP 1.4 cables only
✔ Color Format = YCbCr422
✔ Color Depth = 8 bpc
✔ Both PCs output a valid signal
✔ Both PCs use matching refresh rates
✔ Secondary PC is in Extend Mode
✔ Secondary PC wallpaper set to solid black
If any of these are wrong → fusion will fail, flicker, or be invisible.
3. Connection Guide
Steps
Connect Main PC → DP Input 2
Connect Secondary PC → DP Input 1
Connect Fusion Box DP Output → Monitor
Plug in power (12V)
Turn ON device
Verify lights:
Power = ON
DP1 = Secondary PC detected
DP2 = Main PC detected
If DP1 or DP2 does not light → see Troubleshooting.
4. Required GPU Settings
AMD GPU
Settings → Display
Set:
Color Format: YCbCr 4:2:2
Color Depth: 8 bpc
Match refresh rate to Main PC
AMD users must set 8bpc or fusion will flicker.
NVIDIA GPU
NVIDIA Control Panel → Change Resolution
Set:
Output Color Format: YCbCr422
Output Color Depth: 8 bpc
Dynamic range: Limited or Full (either is fine)
5. Fusion Mode Setup
On Secondary PC, set wallpaper to pure black.
Press [Fuse] on the device.
Press Fuse repeatedly to cycle transparency levels.
Stop when the overlay blends smoothly into the Main PC game.
If overlay looks faint →
Keep pressing Fuse to increase transparency.
6. Laptop & Secondary PC Requirements
Laptops can be used as Secondary PC.
Requirements:
Must output DP (via USB-C→DP or native DP)
Must use Extend Mode
Resolution must match Main PC display
Output going into the Fusion Box must be set as Main Display inside Windows
7. Supported Resolutions & Refresh Rates
3840×2160
60Hz / 120Hz / 144Hz
2560×1440
144Hz / 240Hz / 260Hz
1920×1080
240Hz / 360Hz / 480Hz
Not Supported:
Custom resolutions
3440×1440 ultrawide
Manual EDID overrides
Fusion box auto-reads EDID only.
8. Troubleshooting
DP1 or DP2 light OFF
Wrong cable order
Bad DP cable → replace with DP 1.4
GPU not outputting (test directly to monitor)
Unsupported custom resolution
Fusion mode not visible
Secondary wallpaper not black
Secondary PC in Duplicate mode
Wrong color format (must be YCbCr422)
10-bit / 12-bit enabled → change to 8bpc
Output set to wrong display
Flickering, flashing, unstable
Refresh rates don’t match
AMD color depth not 8bpc
DP cable too long / poor quality
Monitor not sending stable EDID
DP1 ON, DP2 OFF → Black screen
Fusion box requires Main PC (DP2) signal to output anything.
DP2 = base layer DP1 = overlay
If DP2 is off → the device outputs nothing.
9. Technical Specifications
DP Standard
DP 1.4
Color Format
YCbCr 4:2:2
Color Depth
8 bpc
DP Inputs
2
DP Outputs
1
Max Resolution
4K
Max Refresh
480Hz (1080p)
Size
168×98×40 mm
Weight
1 kg
Power
12V 2A
10. Package Contents
Duck DMA 4k Fuser ×1
12V/2A Power Adapter ×1
Warranty Card ×1
Digital Manual ×1
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