H-ig41-uatx Rev 1.1 Schematic ⚡ Official

The H-IG41-uATX Rev 1.1 (also known as the "Eton" motherboard) is an OEM board manufactured by Foxconn for HP and Compaq desktop systems, such as the HP Compaq 500B and CQ3212L.

While a full circuit-level schematic (showing every resistor and trace) is generally a proprietary document not released to the public, the technical specifications and layout diagrams provided by HP Support and The Retro Web offer the essential data needed for troubleshooting and upgrades. Key Technical Specifications

The board is built on the Intel G41 Express chipset, designed for the LGA 775 socket era. Specification Socket LGA 775 (Supports Core 2 Quad, Duo, Pentium, Celeron) Chipset Intel G41 (Northbridge) / ICH7 (Southbridge) Form Factor microATX (uATX) Memory

2x DDR3 DIMM slots; supports up to 4GB officially (some reports suggest 8GB with specific low-density modules) Expansion 1x PCIe x16, 2x PCIe x1, 1x PCI, 1x Mini PCI Storage 4x SATA II (3.0 Gb/s) ports Audio/LAN Realtek ALC662 Audio / Realtek RTL8103E Ethernet Motherboard Layout and Connectivity h-ig41-uatx rev 1.1 schematic

For those looking for a "schematic" to identify port locations, the board follows a standard microATX configuration:

Rear I/O: Features a VGA port, four USB 2.0 ports, an RJ-45 LAN port, and three audio jacks (Line-in, Line-out, Mic).

Internal Headers: Includes two USB 2.0 headers (supporting 4 ports), a front panel audio header, and a standard 9-pin front panel header for power/reset/LEDs. The H-IG41-uATX Rev 1

Power: Requires a 24-pin ATX main power connector and a 4-pin ATX 12V CPU power connector. Common Troubleshooting & Upgrades

I/O, connectors, and headers

• ATX front-panel header: Standard pins for power LED, HDD LED, reset, power switch, and speaker.
• Peripheral connectors: SATA power, front-panel USB (USB2/USB3), audio headers, and fan headers with PWM control and tachometer feedback.
• Expansion and debug: Debug UART header, JTAG/SWD footprint for firmware and silicon debug, and optional mini-PCIe or M.2 outlines depending on board variant.

Applications and Considerations

The H-IG41-UATX Rev 1.1 motherboard, based on its specifications, seems designed for:

• Home or office desktops requiring a balance of performance and power efficiency.
• Supporting Windows 7, 8, 10, and possibly Linux distributions, given the chipset and likely onboard peripherals.

Where to Find the H-IG41-UATX Rev 1.1 Schematic

This is the hardest part. Motherboard manufacturers do not publish schematics for end-users. However, they are available through repair networks. Here are the legitimate sources: ATX front-panel header: Standard pins for power LED,

5. Common Faults and Schematic Traces

When repairing an H-IG41-UATX Rev 1.1, technicians typically encounter three specific failures where the schematic becomes indispensable:

Inside the Foxconn H-IG41-UATX Rev 1.1: A Schematic Analysis

The Foxconn H-IG41-UATX Rev 1.1 is a classic Intel LGA 775 motherboard commonly found in OEM desktop PCs, particularly from HP and Compaq systems (often branded as the Pegatron M2N78-LA or similar variants). For electronics technicians and hobbyists, the schematic diagram for this board is more than just a wiring map—it is the "Rosetta Stone" for diagnosing complex power failures and bringing dead boards back to life.

This article explores the technical architecture of the H-IG41-UATX, breaking down the key sections of its schematic and explaining what repair technicians look for when troubleshooting this hardware.