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Green PCI diagnostic card with four-digit display and speaker 85 by 90 mm

Corn Electronics

Corn Electronics PCI PC Diagnostic Analyzer 4 Digit Card Motherboard Post Tester expansion card

SKU CH-15RQ-X44B0

Displays four-digit POST codes and power-rail status on PCI or ISA slots for motherboard fault diagnosis

  • Displays POST codes on dual hexadecimal read-out for quick fault diagnosis
  • Built-in speaker emits beep codes to identify hardware issues audibly
  • Checks +5V, +12V, +3.3V power rails with LED indicators for power verification
  • Compatible with both PCI and ISA motherboard slots for broad system support
  • Recalls previous POST codes at the touch of a button for review

Diagnostic scope

The Corn Electronics PCI PC Diagnostic Analyzer is a four-digit POST card that plugs into a PCI or ISA slot to reveal motherboard power-on self-test codes. It targets technicians and hobbyists who need to identify boot failures on legacy or current boards without a working display. The dual hexadecimal read-out shows status codes from both component and solder sides of the card. Buyers who want automated Windows-based diagnostics or UEFI log capture will not find those functions here.

Bundled cable impact

The package includes a single signal cable that extends the display away from the expansion slot for easier viewing inside cramped chassis. An on-board speaker adds audible beep codes so faults can be recognised without watching the LEDs. Four power-rail LEDs confirm the presence of +5 V, +12 V and +3.3 V lines, letting the user verify supply health at a glance. No software, drivers or additional adapters are supplied.

Installation notes

The card measures 85 by 90 mm and fits any motherboard with a PCI or ISA connector; no jumpers or configuration are required. Pressing the recall button cycles through previously captured POST codes for retrospective analysis. The only common issue is physical clearance against tall CPU coolers or adjacent cards, which may block the display or the cable header.

Highlights

  • Displays POST codes on dual hexadecimal read-out for quick fault diagnosis
  • Built-in speaker emits beep codes to identify hardware issues audibly
  • Checks +5V, +12V, +3.3V power rails with LED indicators for power verification
  • Compatible with both PCI and ISA motherboard slots for broad system support
  • Recalls previous POST codes at the touch of a button for review

Specifications

No published specifications for this item yet.

Questions about this item

Will the dual POST code display or the built-in speaker need replacement after heavy use?

The card uses a dual dot-matrix hexadecimal read-out and an integrated speaker for beep codes; both are solid-state with no moving parts, so no scheduled replacement is required.

Which voltage rail indicator fails first when a motherboard power fault occurs?

Four onboard LEDs monitor +5 V, +12 V, +3.3 V and 12 V rails; the LED for the faulty rail stays dark while the others remain lit, pinpointing the failed supply instantly.

How much heat does the card add inside a case during all-day diagnostics?

The analyzer draws power only from the PCI or ISA slot it occupies and has no active cooling, so its thermal contribution is negligible during continuous operation.

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