RetroPower PSU C64 FDD Dual US - Replacement Commodore 64 + FDD 1541-II Power Supply, US Plug

High-quality Commodore 64 replacement power supply unit (PSU) with an additional power output for an FDD 1541-II/1571-II/1581. Designed specifically for C64 and VIC-20 systems to preserve them in a pristine condition for years to come. Stabilized and filtered +5V/2.0A DC along with 9V/1.1A AC ensure continued error-free operation of your C64. Robust and sturdy chassis with LED-illumination and different styles and colors to chose from. Fully fused and electrically protected, with round DIN7 plug matching the original C64 PSU pinout. The 1541-II/1571-II/1581 FDD output has a round DIN4 plug and supplies +5V/1.0A and +12V/0.5A DC voltage.

RetroPower PSU C64 FDD Dual US


  • Replacement power supply for Commodore 64 and VIC-20
  • Stabilized 5V/2.0A DC output with anti-ripple filter
  • Transformer-generated 9V/1.1A AC output
  • Stabilized 5V/1.0A and 12V/0.5A DC for floppy drive
  • Supports FDD 1541-II/1571-II/1581
  • Over-voltage and over-current protection
  • Fused on AC and DC side and fully isolated
  • On/off AC switch on rear side
  • Output voltages on universal DIN socket
  • Output power cable included with DIN plugs
  • High quality rigid chassis
  • Dual power supply supports both C64 and FDD 1541-II series
  • Runs cold
  • Weight only 0.7 kg (1.4 lb)
  • Compact enclosure with modern shape 158 mm x 71 mm x 51 mm (6.2" x 2.8" x 2.0")
  • Round DIN7 plug for C64 and DIN4 plug for FDD
  • US-standard 120V AC power plug (U.S., Canada, Mexico, Japan, and others)
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US

$59.99 / €54.99


Manufacturer product number:

Gross weight (inc. packaging):
1.0kg / 2.2 lbs

Size (inc. connectors):
158mm x 71mm x 51mm


A fresh start

Commodore 64 and 128 systems have sold in over 20 million units worldwide, an impressive number even by today's standards. However, unlike modern computers, tablets, and smartphones, a considerable number of C64 and C128 systems are still operational over 30 years after being introduced to the public. In proper hands they have a chance of surviving another 30 years. Yet a common failure among Commodore 64/128 systems is the power supply. This is specifically why we have designed a replacement C64 and C128 PSU. This series of power supplies gives your system a fresh start, minimizing the risk of damage due to an ageing factory power supply.

RetroPower PSU C64 FDD Dual US

Robust and reliable design

The C64 PSU was designed from scratch as a high-quality replacement for the original Commodore power supply. It contains a +5V/2.0A DC switching power module with an anti-ripple filter, along with a true transformer-based 9V/1.1A AC module. The power supply has a sturdy custom-made chassis with a PMMA top window and a LED indicator.

RetroPower PSU C64 FDD Dual US

Dual power supply

The C64 FDD dual power supply has two power outputs, one for the C64 system, and one for the floppy drive 1541-II/1571-II/1581 unit. The FDD output has a round DIN4 plug and supplies +5V/1.0A and +12V/0.5A DC voltage. The entire system can be power through this single power supply.

Modern style chassis

The C64 FDD dual power supply has a chassis design called Modern (as opposed to our C64 Classic series), and resembles a modern power supply with a slick shape of 158 mm x 71 mm x 51 mm (6.2" x 2.8" x 2.0"). It's a lot lighter and more compact than the original C64 power supplies. The C64 PSU chassis are available in colors black and gray.

Black vs. Gray chassis

All our power supplies are available in black and light gray. The performance between both types doesn't differ, it's a matter of taste. The LED and OLED displays (depending on the version) are generally black with white illumination, being more pronounced on the gray edition and giving an interesting color combination. On the other hand the LED/OLED display blends in the black version better, being barely visible when not powered. If at the point of purchase you are uncertain about the item version in the cart, please drop us a message with the desired chassis style, color, plug type and voltage (US/EU/UK/AU).

RetroPower PSU C64 FDD Dual US

Precision and dedication

The development of our series of Commodore, Amiga, Sinclair, Atari, Coleco, and TI power supplies has been driven by a sense of sentiment for retro-computing, combined with accuracy and dedication in creating electrical equipment to be proud of. It goes without saying, that the electronics has been designed by skilled professionals, thoroughly tested, and improved based on years of feedback from thousands of users. However, we have also put a lot of effort into the visual appearance of our power supplies. We design and manufacture our own enclosures with CNC and injection molding technologies. The LED and OLED panels are carved from PMMA to give a modern appearance to the power supplies. Hundreds of hours of designing and perfecting have been put into these devices, to create not only a safe and robust power supply, but also a satisfying visual improvement to your system.

RetroPower PSU C64 FDD Dual US

What else is out there?

The original Commodore power supplies are very hard to get by these days, and often pose a reliability or even safety threat. As for other replacement power supplies, a handful of solutions exist on the market. Yet most of them are DIY-grade, lacking basic quality, electric engineering expertise, and safety features. The vast majority of these power supplies is recognizable by general-purpose plastic enclosures and internal components wired up in a true DIY style. Opening up a few of those power supplies was big motivation for us to design our Commodore C64, C128, Amiga, Atari, ZX Spectrum, Sinclair QL, TI-99/4A, and ColecoVision power supply series.

RetroPower PSU C64 FDD Dual US

Safety first

Our C64 PSU is designed to be safe for the user, and safe for the computer. It's protected from over-current and over-voltage, and fused on both the AC and DC sides. Nevertheless, it's mandatory to say that this is a 120/230V AC power device, which should not be opened, tampered with, or used for anything else than powering an unmodified Commodore 64 computer. It's intended for indoor usage only, the maximum rated current should not be exceeded, and proper ventilation should be ensured. For reference, a picture of the opened power supply is shown below.

RetroPower PSU C64 FDD Dual US - Safety first
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US
RetroPower PSU C64 FDD Dual US