Dreamcast USBC Power Supply

robot_retro Dreamcast Power Board – USBC Drop-In Replacement

Upgrade your Sega Dreamcast’s power supply with a modern, efficient, and solder-free solution. Designed to work seamlessly with all Dreamcast models and mods: including GDEmu, RetroGEM, and 480p SCART RGB setups.

US Customers: All import duties are covered within the shipping fee.

Key Features

True Drop-In USBC PSU Replacement

• No soldering, wiring, or modification required.

Universal Compatibility

• Works with all Dreamcast models (PAL, NTSC, Japanese).
• Fully supports GDEmu, RetroGEM, and RetroTINK-powered 480p SCART RGB cables.

High Efficiency & Low Noise

• Delivers between 90–95% efficiency under real-world loads.
• Low heat output and minimal signal noise.  Reduces video “fuzz” caused by noisy OEM power.

Safe and Reliable

• Built-in over/under voltage, over temperature and fused protection to safeguard your console.
• Prevents damage caused by plugging 240V into a 110V Dreamcast.
• The PSU actively incorporates Over Current Protection, Short Circuit Protection, Under Voltage Lockout and thermal shutdown. During R&D, each voltage rail is load-tested at 2–3× normal operating current to ensure temperature, noise, etc are all within limits. All regulator ICs are manufactured by Texas Instruments and have been sourced from the major distributors.   

Fan Support

• Includes 5V and 12V fan headers for custom cooling setups.
• Note: The Dreamcast still requires a fan plugged into the OEM fan port for successful boot-up.

No LED Distractions

• Designed without flashing LEDs—ideal for use with clear shell builds.

Multicolour 3D-Printed Spacer Included

• Provides a clean and secure fit in the Dreamcast chassis.

Power Requirements

Powered by a 15V or 20V USBC Power Delivery charger. Most 30W PD chargers will work.  Recommended models:

• uGreen Nexode Mini 30W
• Nintendo Switch Power Supply
• High-quality filtered chargers from Anker, Dell, uGreen, etc.

Why Replace the OEM Power Supply?

• The stock Dreamcast PSU is an aging AC-to-DC converter that's bulky, noisy, and inefficient
• Common issues include video interference (fuzzy output) and potential voltage mismatch damage—especially when using 240V UK power with 110V Japanese units

Install Instructions

Other 3D spacer colours can be printed from the files here.

See tutorial and reviews from JoeBleeps and from Macho Nacho Productions.

1. Unscrew the four bottom Dreamcast screws as shown in the photo.
2. Remove the top lid and then remove the two power board screws (see photos).
3. Fit the robot_retro board in exactly the same way as the OEM power board was removed.
4. Fit 3D printer USBC spacer.
5. Button up the console.

Install Instructions

• If you experience resets or graphic glitches when running a GDEmu, please clean the Dreamcast power pins either with a small file or sand paper.  A layer of invisible corrosion can form on these pins over time which can cause instability with the GDEmu unit.  A quick clean will remedy this issue.