H-ig41-uatx Rev 1.1 Schematic Today

The H-IG41-UATX Rev 1.1 is a legacy board, but tens of thousands are still in use in industrial PCs, point-of-sale systems, and retro gaming rigs. When it fails, guessing is expensive and frustrating.

The schematic gives you X-ray vision. It tells you exactly which resistor to probe, which IC generates Vcore, and why the USB ports are dead. While finding the PDF requires digging into repair forums and using precise search strings, the effort is always worthwhile.

Final Pro Tip: When you do find the H-IG41-UATX Rev 1.1 schematic, download it, back it up to two cloud drives, and print a physical copy. When this board inevitably fails again in 2028, you'll be ready.

Do you have a specific failure on your Rev 1.1 board? Share your symptoms in a repair forum and reference the schematic sheet number—technicians will help you instantly.

The H-IG41-uATX (rev 1.1), often referred to by its HP/Compaq codename "Eton," is a micro-ATX motherboard manufactured by Foxconn. While full circuit schematics are generally proprietary and not publicly released, detailed layout guides and pinout specifications are available for troubleshooting and case migration.  Motherboard Layout & Key Components 

This board features an LGA 775 socket and the Intel G41 Express chipset.  Expansion Slots: 1 x PCI Express x16 (for graphics) 2 x PCI Express x1 1 x 32-bit PCI slot 1 x mini-PCI slot (often for wireless cards) Storage & Connectivity: 4 x SATA II (3.0 Gb/s) ports 1 x RJ-45 LAN port (Realtek) 4 x Rear USB 2.0 ports 1 x VGA port  Connector Pinouts & Jumper Settings 

For those migrating this board to a new case, the internal headers follow these standard configurations: 

Front Panel Header (9-pin): Located near the bottom-right edge. It manages the power button, reset button, and status LEDs. Pin 1 is typically marked with a small triangle.

Internal USB Headers: Two 9-pin headers supporting up to 4 additional USB 2.0 ports.

Audio Header (9-pin): Yellow header for front-panel headphone and microphone jacks.

BIOS/CMOS Jumper: Used to reset the BIOS password or clear settings. Normal Position: Pins 2-3.

Clear Position: Move jumper to pins 1-2 for ~10 seconds, then return to 2-3.  Memory & CPU Support 

RAM: Supports up to 4GB of DDR3-SDRAM (2 x 2GB DIMMs). It requires 240-pin unbuffered PC3-10600 (1333 MHz) non-ECC modules. Some users have successfully run 8GB only with specific low-density 16-chip modules and 800MHz FSB CPUs.

CPUs: Compatible with Intel Core 2 Quad, Core 2 Duo, and Pentium processors. 

For complete technical diagrams and step-by-step assembly instructions, you can view the H-I41-uATX (Eton) Layout Guide or the HP-specific Motherboard Specifications on Scribd.  H-I41-uATX Motherboard Specifications | PDF | Usb - Scribd

The H-IG41-uATX (Rev 1.1) Go to product viewer dialog for this item. h-ig41-uatx rev 1.1 schematic

, often referred to by its HP codename Eton, is a micro-ATX motherboard manufactured by Foxconn for various HP and Compaq desktop series, including the Compaq 500B and HP Pavilion P6317. While a full manufacturer schematic (circuit diagram) is rarely available to the public, the board's layout and technical specifications are well-documented for repair and upgrade purposes. Technical Specifications

This board is built on the Intel G41 Express chipset, designed for the aging but versatile LGA 775 socket. Socket Type: LGA 775. Chipset: Intel G41 (Northbridge) and ICH7 (Southbridge).

Memory: Two DDR3 DIMM slots. While officially supporting up to 4GB (2x2GB), some users have successfully run 8GB configurations with specific low-density 16-chip modules. Expansion: 1x PCI Express x16 slot for dedicated graphics. 2x PCI Express x1 slots. 1x Standard PCI slot. 1x Mini PCI slot (often used for wireless cards).

Storage: 4x SATA II (3Gb/s) ports. Note that some users report compatibility issues with certain SATA 6Gbps SSDs.

I/O Panel: VGA port, 4 to 6 USB 2.0 ports, RJ-45 LAN, and standard audio jacks (Line In/Out/Mic). Core Component Layout

For troubleshooting or custom builds, identifying the key headers is essential:

Power: One 24-pin ATX main power connector and one 4-pin ATX 12V CPU power connector.

Fans: Dedicated 4-pin CPU fan header and 3-pin rear system fan header.

Front Panel Header: A 9-pin header located at the bottom right of the board. It controls the power button, reset button, power LED, and HDD LED.

Internal Audio: A 9-pin yellow header for front-panel headphone and microphone jacks. Supported Processors

The Rev 1.1 board supports a wide range of 45nm and 65nm Intel processors: Intel Core 2 Quad (up to 95W TDP). Intel Core 2 Duo. Pentium Dual-Core and Celeron models.

Xeon Support: Modification of the BIOS with specific microcodes is often required to run LGA 771 Xeon CPUs (like the E5450) on this board. Troubleshooting and Resources

If you are looking for specific wiring or setup guides, the following resources are commonly used by the community:

Manuals: Digital versions of the Eton Motherboard Specifications provide detailed pinout diagrams.

BIOS Updates: HP's support site and forums like Bios-Mods host various BIOS versions, including modified ones for Xeon compatibility or updated microcodes. H-IG41-uATX Rev: 1.1 Motherboard The H-IG41-UATX Rev 1

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

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.

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

To find the specific schematic for the H-IG41-UATX Rev 1.1, you might need to:

In conclusion, while the "H-IG41-UATX Rev 1.1" motherboard represents somewhat dated technology, understanding its schematic can be valuable for troubleshooting, upgrading, or simply learning about computer hardware design.

The H-IG41-uATX Rev 1.1 (also known as the Eton motherboard) is a microATX board manufactured by Foxconn for HP and Compaq systems, such as the Compaq 500B Microtower. It is a budget-friendly LGA 775 platform designed for legacy office and home use. Core Specifications

Chipset: Intel G41 Express (Northbridge) with ICH7 (Southbridge).

Processor Support: Compatible with Intel Core 2 Quad, Core 2 Duo, Pentium Dual-Core, and Celeron processors.

Memory: Supports up to 4GB of DDR3 (1333/1066/800 MHz) across two slots. Some reports suggest the chipset can handle 8GB, but the board is officially rated for 4GB.

Expansion: Includes 1x PCIe x16, 2x PCIe x1, and 1x legacy PCI slot. Review & Technical Insights Do you have a specific failure on your Rev 1

For repair and maintenance, the following details are essential:

Common Issues: A known failure point is the main Intel IC getting excessively hot, which often indicates a short or power delivery failure.

Repair Documentation: Official full electronics schematics are not publicly released by HP; however, a basic Maintenance and Service Guide provides part maps, LED error codes, and jumper settings for clearing CMOS. Troubleshooting:

Voltage Rails: Technicians typically look for 3V on the BIOS chip (Pin 1) and stable 1.8V lines for memory management.

BIOS: BIOS updates are specific to the HP/Compaq model it was pulled from (e.g., HP 500B). Finding the Schematic

Because this is an OEM board, finding a literal Rev 1.1 circuit diagram usually requires third-party archives:

Manuals & Layouts: Basic specifications and layout diagrams are available on Scribd.

Boardview/Schematic Files: Professional repair technicians often source these from specialized forums or repositories like The Retro Web or Telegram-based archives. H-Ig41-Uatx Manual - Facebook

Foxconn H-IG41-uATX (Eton) Motherboard: Specifications and Layout Guide Foxconn H-IG41-uATX (internal name

) is a micro-ATX motherboard commonly found in HP and Compaq desktop PCs like the Compaq 500B HP Pro 2000

. Known for its reliability in budget office builds, this Revision 1.1 board utilizes the LGA 775 socket and the Intel G41 Express chipset. Key Hardware Specifications H-I41-uATX Motherboard Specifications | PDF | Usb - Scribd

Based on repair logs, here are the top issues:

| Symptom | Likely Cause | Schematic Reference | | :--- | :--- | :--- | | No power, fan twitches | Short on +12V line (VRM high-side MOSFET) | Page 5 – VRM section. Check Q1, Q2 MOSFETs. | | Boot loops / resets every 3 sec | Missing Vcore or Vdimm due to bad PWM feedback | Page 4 – Find FB pin of PWM IC. | | USB ports not working | Blown SB (Southbridge) or damaged USB filter IC | Page 9 – USB power switch (e.g., G586). | | No display but fans spin | Corrupt BIOS or failed G41 solder joints | Page 12 – SPI BIOS pinout (CS, SO, SI, SCK). | | Audio crackling / no sound | Failed ALC662 codec or missing +5VA | Page 15 – Analog power rail. |

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: