Universal ITX Backplane - Assembled ISA & PC/104

Universal ITX Backplane — Assembled Board

An assembled backplane for modular retro-computer builds using compatible ISA or PC/104 processor and expansion boards. The reference design was developed for Micro8088 and Xi8088-style systems.

Supplied configuration

One soldered backplane with its fitted connectors. This listing is for the assembled version, rather than a bare PCB or loose-parts kit. A separate compatible processor board is required to build a working computer.

Reference design

• Four-layer PCB in a Mini-ITX-format layout.
• Three 8/16-bit ISA card positions, using paired connector sections.
• A PC/104 connection for compatible system designs.
• VGA-related connections and DB9 I/O connection points.

The original design includes MonochromeVGA circuitry. Available video and I/O functions depend on the installed cards, wiring and system configuration; the backplane is not a complete graphics adapter or computer.

Installation and compatibility

Check bus pinouts, power requirements, card orientation, mounting and case clearance against your chosen boards. Mini-ITX format does not guarantee that every ISA card arrangement will fit a commercial Mini-ITX enclosure. Switch off and disconnect power before fitting cards or changing wiring.

Power-control check

The supplied assembled configuration has been tested for normal power-button on/off operation. Historical prototype notes in the reference project describe an early power-control issue; they should not be read as a fault report for this supplied, function-tested configuration.

Design files and build notes

• Original reference design and KiCad files
• Project description and early-revision correction notes

Package contents vary by product and selected option. Review the item description below before ordering: a bare PCB, DIY kit, assembled board and case-only listing include different items. If a component or accessory is unclear, contact us before purchasing.

Read the documentation for this exact product and selected configuration before assembly, wiring or powering it. Use the Docs tab or the documentation links in the product description below. Check compatibility, required tools and power requirements; contact us if anything is unclear.

Hardware is tested before shipping whenever stock is available. The product includes a 1-year non-transferable warranty covering manufacturing defects. If compatibility or setup issues occur, contact support before requesting a return.