Mini PCI PCI-E 2-Digit Laptop Motherboard Diagnostic Card
Mini PCI PCI-E 2-Digit Laptop Motherboard Diagnostic Card
Mini PCI / PCI-E 2-Digit Laptop Motherboard Diagnostic Card
The OULLX Mini PCI/PCI-E Diagnostic Card is a professional-grade motherboard analysis tool designed specifically for laptop technicians and advanced users. With its 2-digit LED POST code display and multi-interface compatibility, this compact card makes laptop motherboard fault analysis fast, accurate, and efficient — without the need for a fully operational system.
⚠️ Important Compatibility Notice: This diagnostic card is compatible with most laptops, but not all laptop motherboards are supported. This is a hardware compatibility consideration, not a product defect. This card is designed exclusively for laptops — it does NOT work with desktop computers and cannot be used via a converter card with desktop systems.
Key Features
- 2-Digit LED POST Code Display — Instantly reads hexadecimal POST codes to help pinpoint motherboard faults and boot sequence errors
- Dual Onboard Capacitors — Ensures stable power delivery and a steady red LED indicator for reliable diagnostics
- Three Interface Support — Compatible with Mini PCI, Mini PCI Express (Mini PCI-E), and LPC Bus interfaces; only one interface needs to be connected at a time
- Mini PCI-E Pin Support — Works with PIN-8, PIN-10, PIN-12, PIN-14, PIN-16, PIN-17, and PIN-19 configurations
- LPC Bus Interface — Supports flying-wire LPC connections with clearly defined pinout (left to right: PIN1-LFRAME#, PIN2-LAD3, PIN3-LAD2, PIN4-LAD1, PIN5-LAD0, PIN6-GND, PIN7-LRESET#, PIN8-LCLK, PIN9-3.3V)
- IBM Laptop Compatibility — Detailed LPC pinout mappings provided for IBM X60 (U39 slot) and IBM T6/R6 (J26 insert pin) motherboards
- Pre-Tested Before Shipment — Each card is functionally verified prior to dispatch
- Compact & Internal Installation — Slots directly into the laptop's Mini PCI or Mini PCI-E port — no external setup required
Interface & Technical Specifications
| Brand | OULLX |
| Model | 2-Digit PCIE Diagnostic Card |
| Interfaces | Mini PCI, Mini PCI-E, LPC Bus |
| Display | 2-Digit LED (Hexadecimal POST Codes) |
| Installation | Internal (direct slot insertion) |
| Compatible With | Laptops / Notebooks only |
| Country of Origin | Made in China |
Supported Flying-Line Chips
For motherboards requiring flying-wire LPC connections, this card is compatible with the following chips: PC97551, PC87541, PC87591, H8S/2149, W83L950D, TCPA.
Who Is This For?
This card is ideal for laptop repair technicians, IT professionals, and electronics enthusiasts who need a reliable, portable tool for diagnosing motherboard boot failures and POST errors. A basic understanding of motherboard architecture and hands-on electronics experience is recommended for best results.
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Frequently Asked Questions
Q: Can I use this Mini PCI/PCI-E diagnostic card with my desktop computer?
A: No. This diagnostic card is designed exclusively for laptops and notebooks with Mini PCI, Mini PCI-E, or LPC bus interfaces. It will not function with desktop computers, even when used with a converter or adapter card. If you need a diagnostic card for a desktop computer, you will need a separate PCI/PCI-E desktop-specific POST card.
Q: Do I need to connect all three interfaces (Mini PCI, Mini PCI-E, and LPC) at once?
A: No. You only need to connect one interface at a time — whichever port is available on your laptop motherboard. The other two interfaces can remain unconnected during testing.
Q: What do the 2-digit POST codes mean, and how do I read them?
A: The 2-digit LED display shows hexadecimal POST (Power-On Self-Test) codes output by the motherboard during the boot process. Each code corresponds to a specific stage or fault in the boot sequence. You can cross-reference these codes with your motherboard's BIOS POST code reference chart to identify where the boot process is failing and diagnose the underlying hardware issue.
Q: My laptop is not being detected by the diagnostic card. Is the card defective?
A: Not necessarily. While all cards are tested before shipment, not every laptop motherboard is compatible with this diagnostic card. If your laptop does not respond, try testing with a different laptop. Compatibility limitations are a known characteristic of this type of tool and are not indicative of a product defect.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.