Product Grading System

We only sell top condition retro gaming and we grade every console and accessory very carefully. Our ranking system helps you make the right choice with full transparency.

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S Rank

Our highest rank. Reserved for brand new, factory-sealed products. Extremely limited stock. Collector-grade.

A Rank

For products that are opened yet near-new, showing minimal to no wear. True Mint condition.

B Rank

Complete-in-box (CIB) products in great original shape and condition. No major wear, fully inspected, tested, and certified.

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Nec PC Engine RAU-30 ROM2 Adaptor in RetroPixl studio on RetroPixl.com  for Retrogaming players and Retro Gaming Collectors
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In Focus

The NEC PC Engine RAU-30 ROM² Adapter plays a central role in the transition from cartridge-based gaming to CD-ROM media within the PC Engine ecosystem. Rather than redesigning the console, NEC introduces this adapter to extend functionality through external hardware, reflecting a modular philosophy that defines the platform. Its presence marks one of the earliest consumer steps toward optical gaming at home.

Fun fact: the ROM² Adapter works in tandem with the System Card, which is required to manage CD-ROM functionality, making the upgrade process a layered combination of hardware and software components.

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Tech Specs

Product Details

Model: RAU-30 ROM² Adapter
Manufacturer: NEC / Hudson Soft
Release year: 1988
Region: Japan
Variant: CD-ROM² interface adapter
Edition: Standard retail accessory

Technical Specs

Function: CD-ROM² interface expansion
Connection type: rear expansion port interface
Data interface: connects PC Engine to CD-ROM² unit
Power: draws power from connected system configuration
Technical notes: requires System Card for CD-ROM operation

Compatibility

Compatible system: NEC PC Engine (original model)
Compatible add-on: PC Engine CD-ROM² System
System requirements: System Card required for CD-ROM functionality
Not compatible with: later integrated systems with built-in CD support (Duo series)
Signal compatibility: NTSC-J

Physical & Usage Information

Form factor: rear-mounted expansion interface
Finish: gray matching original PC Engine aesthetic
Materials: molded plastic shell with internal circuitry
Handling notes: attach securely between console and CD-ROM² unit before powering on
Care: avoid stress on connectors and store in a dry environment to preserve contacts

What's in the Box

  • Sword icon for players and collectors of retro gaming on RetroPixl

    Accessory

  • An icon of a retro gaming instruction manual on RetroPixl

    Manual & Inserts

FAQs

Please read our full FAQs page to find out more.

Can I request more pictures of the product I am interested in?

Of course! If you’d like additional photos of a specific console, accessory or collectible, contact us using the form on the right and we’ll be happy to provide more images whenever possible. Our goal is to help you feel completely confident before purchasing a high-value collectible.

What are the S, A, and B grades?

Our grading system is inspired by Japanese standards and keeps things simple:

  • S-gradeBrand new, factory-sealed.
    The rarest finds. Unopened, unused, often available as single units. Top-tier collector pieces.
  • A-gradeMint condition, complete-in-box.
    Opened but preserved exceptionally well, fully inspected and tested, and almost indistinguishable from new.
  • B-gradeComplete-in-box in good condition.
    Light signs of handling, fully functional, carefully evaluated, and ideal for players who want quality without collector-level pricing.

For more information, please visit this page.

Why are S and A grades more expensive?

At RetroPixl, we only curate high-quality retro gaming consoles, accessories, and collectibles that serious collectors seek out, often for years. Our catalog includes brand-new sealed items (S-grade), mint complete-in-box pieces (A-grade), and carefully selected complete-in-box units in excellent condition (B-grade).

Brand new and sealed (S-grade), and mint (A-grade) items command higher prices due to their rarity and condition, especially for Japan-only releases.

B-grade items, while still complete and well preserved, offer a more accessible entry point into collecting or playing.

Every piece is sourced through trusted partners in Japan and vetted for authenticity, condition, and presentation. What you’re paying for is rarity, reliability, and peace of mind, whether you’re collecting at the very top or starting your journey.

Can I track my order?

Yes. Every order shipped from RetroPixl includes full tracking. As soon as your package leaves our warehouse, you’ll receive a tracking link by email so you can follow its journey until delivery.

For mor einformation about Shipping, please visit this page.

The product I want is sold out, when will it be back in stock?

Because our products are rare and sourced in S-grade, A-grade, or B-grade condition, it’s difficult to predict when or if we’ll be able to restock the same item. Some pieces appear only once, and many disappear into private collections for years.

If you’re hunting something specific, you can use our Find It For Me service:

Just tell us what you’re looking for, and we’ll search through our network of trusted partners and collectors across Japan and Asia. If the item exists, we’ll find it, grade it, and ship it to you.

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