The Pegatron M2N78-LA is a popular Micro-ATX motherboard commonly found in HP and Compaq desktop systems, such as the Pavilion and Presario series. Known by the HP codenames Violet-GL8E (Rev 3.02) and Violet6 (Rev 6.01), this board was a staple for AMD-based budget and mid-range builds during the late 2000s.
If you are looking for the Pegatron M2N78-LA manual or key specifications to upgrade an older machine, this guide covers everything from CPU compatibility to front panel headers. Core Specifications Overview
The motherboard is built around the NVIDIA GeForce 9100 chipset. It typically follows a Micro-ATX form factor (24.4 cm x 24.4 cm), making it compatible with most standard desktop cases. Rev 3.02 (Violet) Rev 6.01 (Violet6) CPU Socket Socket AM2 / AM2+ Socket AM3 Memory Type DDR2 (Up to 800 MHz) DDR3 (Up to 1333 MHz) Max RAM 16 GB (4 slots) 16 GB (4 slots) Chipset NVIDIA GeForce 9100 NVIDIA GeForce 9100 Graphics Integrated GeForce 9100 Integrated GeForce 9100 CPU Support and Upgrades Compatibility depends heavily on your specific revision. M2N78-LA motherboard, which CPU phenom is compatible
Cause: Unseated RAM or unsupported DDR2. Fix: The M2N78LA does not like double-sided high-density RAM. Use "low density" 2GB sticks. Also, populate the slots as DIMM1 and DIMM3 (white slots) first, not the black ones.
The Pegatron M2N78LA is a standard, workhorse motherboard from the DDR2 era. While obsolete by modern standards, its support for up to 8GB of RAM and a PCIe x16 slot makes it a viable candidate for building a budget retro-gaming PC capable of running Windows XP or Windows 7 and period-correct titles. pegatron motherboard m2n78la manual top
Pegatron M2N78LA Motherboard Manual
Table of Contents
1. Introduction
Congratulations on purchasing the Pegatron M2N78LA motherboard! This manual will guide you through the installation and configuration of your new motherboard. The Pegatron M2N78-LA is a popular Micro-ATX motherboard
2. Motherboard Layout
The Pegatron M2N78LA motherboard is designed with the NVIDIA nForce 780L chipset, supporting AMD Socket AM2+ processors. The motherboard layout is as follows:
3. Hardware Installation
This section will guide you through the installation of the motherboard and its components. 1 x PCI Express x1
Cause: Known issue with NVIDIA chipset drivers on Windows 7/8. Fix: Disable "USB Selective Suspend" in Windows Power Options. There is no fix in the Pegatron manual because HP never addressed it.
This is a standard 4-pin PWM header. However, the BIOS is notoriously picky. If you use a 3-pin fan, you might get a "CPU Fan Error." To fix this, plug the fan into the SYS_FAN header and disable monitoring in BIOS.
For users attempting to refurbish a system with this board, there are a few critical points to consider: