Retro Console Power Supply Compatibility Guide
Retro Sales Australia & USA · Power Supply Guide
Retro Console
Power Supply
Compatibility Guide
Find the correct replacement power supply for over 90 retro game consoles. Made in Australia. Trusted by collectors worldwide since 2010.
Our Products
Three Models. Every Retro Console Covered.
Retro Sales manufactures modern switching power supplies specifically engineered for retro game consoles. Our units replace ageing original adapters that can output unstable voltages — original Sega supplies, for example, were unregulated and could output anywhere from 7V to 14V. Our regulated supplies give your console a clean, steady voltage every time.
- 1× 4.75×1.7mm — centre positive (EIAJ-3)
- 1× 5.5×2.5mm — centre negative (fits 5.5×2.1mm too)
- 2× 5.5×2.5mm — centre neg (Mega Drive 1 / Mega CD 1&2)
- 2× 4.75×1.7mm — centre pos (Mega Drive 2 / 32X)
- 1× Proprietary — US SNES & Virtual Boy JP (bonus plug)
Before You Buy
Understanding Polarity — The Most Important Thing
Polarity refers to which pin of the barrel connector carries positive voltage. Connecting a power supply with the wrong polarity can permanently damage your console. Always check the polarity symbol on your console before purchasing a replacement supply.
The centre pin of the barrel connector is positive (+). The outer ring is negative (−). Symbol shows ⊕──( (dot connected to +).
Consoles: Mega Drive 2, Genesis 2/3, 32X, Nomad, CDX, Mega Jet, Wondermega, PC Engine Duo-R/RX, Atari Lynx, and others.
The centre pin of the barrel connector is negative (−). The outer ring is positive (+). Symbol shows ⊖──( (dot connected to −).
Consoles: Mega Drive 1, Master System, PC Engine, TurboGrafx-16, Atari Jaguar, NES (DC mode), Famicom, Super Famicom, and many others.
Quick Reference by Console Family
Which Model Do I Need?
Use the tables below to quickly find the right Retro Sales model for your console. For complete specifications including original PSU part numbers, connector sizes, and detailed notes, use the full searchable table further down this page.
Sega Mega Drive / Genesis Family
- Mega Drive 1 / Genesis 1RSA0902000
- Mega Drive 2 / Genesis 2RSA0901500
- Genesis 3RSA0901500
- Mega CD 1 / Sega CDRSA0902000
- Mega CD 2 / Sega CD 2RSA0902000
- 32XRSA0901500
- CDX / Multi-MegaRSA0901500
- Wondermega / X'EyeRSA0901500
- NomadRSA0901500
- Mega JetRSA0901500
- Sega PicoRSA0901500
- Mega Drive + CD + 32X stackRSU1003000
Sega Master System & Game Gear
- SG-1000 / SG-1000 IIRSA0902000
- SC-3000RSA0902000
- Mark III / Master System (JP)RSA0902000
- Master System 1 (US / EU)RSA0902000
- Master System 2 (US / EU)RSA0902000
- Game Gear — EU / JP modelsRSA0902000
- Game Gear — US model 2110 onlyRSA0901500
- Game Gear — US HGG-3210 / 2110-50RSA0902000
- SaturnInternal PSU
- DreamcastInternal PSU
NEC PC Engine / TurboGrafx Family
- PC EngineRSA0902000
- CoreGrafx I / IIRSA0902000
- PC Engine ShuttleRSA0902000
- CD-ROM²RSA0902000
- CD-ROM² Interface Unit (IFU-30)RSA0902000
- TurboGrafx-16 (US)RSA0902000
- TurboGrafx PAL (EU)RSA0902000
- TurboGrafx-CD console unitRSA0902000
- TurboGrafx-CD dock / baseRSA0902000
- Duo-RRSA0901500
- Duo-RXRSA0901500
- SuperGrafx6.3×3.0mm — no model
- PC Engine GT / TurboExpress3.5×1.35mm — no model
- PC Engine Duo / TurboDuo6.3×3.0mm — no model
- Super CD-ROM²12V — no model
Nintendo Family
- NES (US) — DC mode via bridge rectifierRSA0902000
- NES (PAL) — DC mode via bridge rectifierRSA0902000
- Famicom / AV FamicomRSA0902000
- Famicom Disk SystemRSA0902000
- Super Famicom (SFC)RSA0902000
- SNES (US)RSU1003000
- SNES (PAL)9V AC — no model
- Virtual Boy (JP)RSU1003000
- Virtual Boy (US)RSA0902000
- Nintendo 64Proprietary — no model
- GameCubeProprietary — no model
Atari Family
- Jaguar (US / EU)RSA0902000
- Jaguar CDRSA0902000
- 26003.5mm TS — no model
- 5200Non-standard voltage
- 7800Keyed connector — no model
- Lynx3.5×1.35mm — no model
SNK Neo Geo Family
- Neo Geo AES (5V models)⚠ 5V only — NOT compatible
- Neo Geo AES (10V models)⚠ Verify your model first
- Neo Geo CD / CDZMulti-rail keyed — no model
- Neo Geo Pocket / ColorBattery / 3.15V — no model
RSU1003000 — Deep Dive
Sega Tower of Power: One Supply to Rule Them All
When Sega launched the Mega Drive add-on ecosystem in the early 1990s, they required collectors to run three separate power bricks simultaneously — one for the Mega Drive, one for the Mega CD, and one for the 32X. The RSU1003000 Tower of Power replaces all three with a single modern regulated supply.
How the five plugs work
The RSU1003000 ships with five output cables from a single power brick:
- 2× 5.5×2.5mm centre-negative — for the Mega Drive 1 (or Genesis 1) and the Mega CD 1 or 2. These use the same polarity and connector as each other.
- 2× 4.75×1.7mm centre-positive (EIAJ-3) — for the Mega Drive 2 (or Genesis 2) and the 32X. Again, same spec on both.
- 1× Proprietary Nintendo connector — a bonus plug covering the US SNES and the JP Virtual Boy, which share the same unique connector that Nintendo designed exclusively for those consoles.
The four Sega plugs are provided in pairs (two of each type) so you can power any combination of consoles — a Mega Drive 1 + Mega CD + 32X stack, or a Mega Drive 2 + Mega CD + 32X stack — with one plug always left hanging unused. This gives you maximum flexibility regardless of which revision of the Mega Drive you own.
Works in every region
The RSU1003000 is a modern auto-switching supply rated for 110–240V AC at 50/60Hz, certified for Australia/NZ (AS/NZS), USA (UL), Europe (CE), and SAA. You do not need a step-down transformer regardless of which country you are in.
Why the original power supplies were a problem
Original Sega power supplies from the 1990s were unregulated linear supplies. Under load they could output anywhere from 7V to 14V — a significant variation that puts stress on console components over time. Our regulated 10V DC output remains steady regardless of load, protecting your collection.
Full Database
Complete Compatibility Table
Search or filter by brand, console, region, connector type, or polarity. Click column headers to sort. All data verified against original hardware and manufacturer documentation.
| Brand | Console / Model | Region | Original PSU | Voltage | Current | Polarity | Connector | Type | Retro Sales Model | Notes |
|---|
Frequently Asked Questions
Common Questions About Retro Console Power Supplies
It depends on which Mega Drive model you have. The Mega Drive 1 (and Genesis 1) uses a 9V DC centre-negative supply with a 5.5×2.1mm barrel jack — the Retro Sales RSA0902000 is compatible. The Mega Drive 2 (and Genesis 2) uses a 10V DC centre-positive supply with a 4.75×1.7mm EIAJ-3 barrel jack — the Retro Sales RSA0901500 is compatible. If you're running a Mega Drive + Mega CD + 32X Tower of Power setup, the RSU1003000 covers all three consoles simultaneously with a single supply.
The PC Engine, CoreGrafx I/II, and PC Engine Shuttle all use a 9V DC centre-negative supply with a 5.5×2.1mm barrel jack. The Retro Sales RSA0902000 is compatible with all three, as well as the CD-ROM² unit and IFU-30 interface. The original PSU part numbers were PAD-105 and PAD-106. Our former model numbers GG090200 and MKS-1002000AU have been updated to RSA0902000.
The PC Engine Duo-R and Duo-RX are different — they use a 9V DC centre-positive supply with a 4.75×1.7mm EIAJ-3 barrel jack, compatible with the Retro Sales RSA0901500. Our former model GG090150 is now RSA0901500.
The TurboGrafx-16 (US) uses a 10.5V DC centre-negative supply with a 5.5×2.1mm barrel jack (original PSU: HES-ACA-01). The Retro Sales RSA0902000 (9V DC centre-negative) is compatible — the console's internal regulator is tolerant of the slightly lower voltage. The same applies to the TurboGrafx PAL (EU) model. Former Retro Sales model GG090200 is now RSA0902000.
Yes. Although the original NES (all regions) and Famicom shipped with AC power supplies, both consoles contain an internal bridge rectifier that converts AC to DC internally. This means a DC supply can be fed into either side of that rectifier. The Retro Sales RSA0902000 (9V DC centre-negative) works safely on the NES US (5.5×2.1mm jack) and NES PAL (5.5×2.5mm jack — RSA0902000 fits both sizes). No modification is required.
RSA stands for Retro Sales Australia. RSA models (RSA0901500 and RSA0902000) ship with Australian plug configurations and are sold primarily through our Australian store at retrosales.com.au.
RSU stands for Retro Sales USA. RSU models (RSU1003000, formerly RSU0903000) ship with US plug configurations and are sold through our US store at retrosales.com. The RSU1003000 is the Sega Tower of Power 5-in-1 adapter.
All models are rated for 100–240V input and will operate in any country with an appropriate plug adapter.
The Game Gear varies significantly by region. EU and JP Game Gear models use a 9–10V DC centre-negative supply with a 5.5×2.1mm barrel jack — compatible with RSA0902000. The US Game Gear model 2110 uses a 10V DC centre-positive supply with a 4.75×1.7mm EIAJ-3 barrel jack — compatible with RSA0901500. Note that US Game Gear models HGG-3210 and 2110-50 use the centre-negative configuration like the EU/JP models, despite being US units — check the label on the bottom of your console.
Yes. Our power supplies provide ample current headroom for modded consoles and Everdrive / flash cartridge devices that place additional demands on the supply. The RSA0902000 outputs 2000mA (2A) and the RSA0901500 outputs 1500mA (1.5A) — both significantly more than stock consoles draw, leaving headroom for HDMI kits, region mods, and flash carts. The RSU1003000 outputs 3000mA (3A) across all five outputs combined.
Cheap unregulated supplies can output wildly variable voltages, generate electrical interference that shows up as video noise or audio hum, and lack short-circuit protection. Original Sega power supplies from the 1990s were themselves unregulated — they could output anywhere from 7V to 14V depending on load and age. Our supplies output a regulated, steady voltage and include overload and short-circuit protection, are certified to AS/NZS, USA UL, CE, and SAA standards, and carry a 1-year warranty. We are the manufacturer — not a reseller — so you get direct quality control.
About Retro Sales
Australia's Retro Gaming Specialists Since 2010
Retro Sales (formerly Global Garage Australia) is a 100% Australian-owned and operated retro gaming store based in Melbourne. We repair, restore, and supply accessories for retro game consoles — and we manufacture our own power supplies specifically engineered for retro hardware.
Our RSA and RSU power supply models were developed because we kept seeing collectors damage consoles with incorrect or deteriorating original power supplies. We are the original manufacturer of these products — if you see them listed by other sellers on Amazon or eBay, those are unauthorised resellers. Buy direct from us for genuine products with warranty support.
RSA = Retro Sales Australia · RSU = Retro Sales USA
