Contents

How to Record Laptop Screen with RecDual Dongle?

This guide explains how to record your laptop’s screen using RecDual Dongle’s Type-C DP connection.

Requirements

  • RecDual Dongle

  • Type-C to Type-C cable

  • Laptop with Type-C port supporting DisplayPort

  • Formatted TF card

Note

Your laptop’s Type-C port must support DisplayPort Alt Mode or Thunderbolt. Not all Type-C ports support video output.

Compatible Laptops

Windows Laptops:

  • Microsoft Surface Laptop/Pro series

  • Dell XPS series

  • HP Spectre/Omen series

  • Lenovo ThinkPad X1 series

  • ASUS ROG series

  • Razer Blade series

MacBooks:

  • All MacBooks with USB-C/Thunderbolt ports

  • MacBook Air (M1/M2/M3/M4)

  • MacBook Pro (all USB-C models)

See Compatible PC/Mac Devices for RecDual Dongle for complete list.

Step-by-Step Instructions

Step 1: Prepare RecDual Dongle

  1. Insert formatted TF card

  2. Verify REC LED turns solid green

Step 2: Connect to Laptop

  1. Connect Type-C cable to laptop

  2. Connect other end to Type-C DP IN on RecDual Dongle

  3. SWITCH LED should light up blue

Step 3: Configure Display Settings

This step is crucial for recording your main screen:

On Windows:

  1. Right-click desktop → Display settings

  2. Scroll to Multiple displays

  3. Select Duplicate these displays

  4. Click Apply

On macOS:

  1. Open System Preferences (or System Settings)

  2. Click Displays

  3. Click Arrangement tab

  4. Check Mirror Displays

Step 4: Start Recording

  1. Verify SWITCH LED is solid blue (signal detected)

  2. Press REC/STOP button

  3. REC LED blinks green (recording)

Step 5: Stop Recording

  1. Press REC/STOP button

  2. REC LED returns to solid green

Why Display Mirroring Matters

Without mirroring (Extended display):

  • RecDual Dongle records the extended desktop

  • This is typically a blank or secondary screen

  • Not what you want to capture

With mirroring (Duplicate display):

  • RecDual Dongle records your main screen

  • Captures everything you see

  • Correct setup for screen recording

Troubleshooting

No signal (SWITCH LED blinking blue):

  1. Verify laptop Type-C port supports DP/Thunderbolt

  2. Try a different Type-C port on laptop

  3. Try a different cable

  4. Check laptop display settings

Recording shows blank screen:

  • Display mirroring not enabled

  • Enable “Duplicate displays” in settings

Laptop doesn’t recognize RecDual Dongle:

  • Port may not support DisplayPort

  • Try HDMI connection if laptop has HDMI output

Alternative: HDMI Connection

If your laptop has an HDMI port:

  1. Connect laptop HDMI → RecDual Dongle HDMI IN

  2. Connect power adapter to Type-C PWR

  3. Select HDMI mode (green LED)

  4. No display mirroring configuration needed

  5. HDMI output mirrors by default on most laptops

Tips

  1. Check port capability first - Verify DP support before purchase

  2. Test before important recordings - Ensure proper setup

  3. Disable notifications - Prevent on-screen popups

  4. Set high resolution - Use native resolution for best quality

  5. Prepare content - Have everything ready before recording

Related articles:

Compatible PC/Mac Devices for RecDual Dongle Do I Need to Set Display Mirroring on Laptop? How to Record USB Type-C Devices with RecDual Dongle?