# Asus M4A785T-M

> Asus Mainboard with the AMD 785G northbridge and AMD SB710 southbridge

**Wikidata**: [Q97305227](https://www.wikidata.org/wiki/Q97305227)  
**Source**: https://4ort.xyz/entity/asus-m4a785t-m

## Summary
The **Asus M4A785T-M** is a motherboard manufactured by ASUS, featuring the **AMD 785G northbridge** and **AMD SB710 southbridge**. It supports the **Socket AM3** CPU socket and includes **PCI Express 2.0 slots, DDR3 RAM, and SATA 3.0 connectivity**, making it compatible with AMD Phenom and Athlon II processors.

## Key Facts
- **Manufacturer**: ASUS (Taiwanese electronics company, founded 1989)
- **Chipset**: AMD 785G northbridge + AMD SB710 southbridge
- **CPU Socket**: Socket AM3 (compatible with AMD Phenom and Athlon II processors)
- **Memory Support**: DDR3 SDRAM (4 slots)
- **Expansion Slots**: 1x PCI Express 16-lane (2.0), 1x PCI Express 1-lane (2.0), 2x PCI Express 2.2 expansion slots
- **Storage Connectivity**: 6x SATA data connectors, 1x PATA data connector
- **I/O Connectors**: HDMI, USB 2.0 (3x), RS-232
- **Indicators**: Green LED indicator light
- **Compatibility**: Supports coreboot firmware (versions 4.1 to 4.11)
- **Instance of**: Motherboard (main printed circuit board for computing devices)

## FAQs
### Q: What processors does the Asus M4A785T-M support?
A: The M4A785T-M supports **Socket AM3** processors, including AMD Phenom and Athlon II CPUs.

### Q: How many RAM slots does it have?
A: It has **4 DDR3 SDRAM slots** for memory expansion.

### Q: What version of PCI Express does it support?
A: It supports **PCI Express 2.0** for graphics and expansion cards.

### Q: Does it include an HDMI port?
A: Yes, the M4A785T-M features an **HDMI connector** for video output.

### Q: Is it compatible with coreboot?
A: Yes, it supports **coreboot firmware** (versions 4.1 to 4.11).

## Why It Matters
The **Asus M4A785T-M** was a mid-range motherboard released in the late 2000s, designed for AMD-based systems. It provided a balance of performance and affordability, supporting **DDR3 memory and PCI Express 2.0**, which were cutting-edge features at the time. While no longer in production, it remains a notable example of ASUS’s contributions to motherboard design, particularly for AMD platforms. Its compatibility with **coreboot** also makes it relevant to open-source firmware enthusiasts.

## Notable For
- **First ASUS motherboard** to support **AMD 785G chipset** with **SB710 southbridge**
- **Included HDMI** for high-definition video output, a feature uncommon in budget motherboards at the time
- **Supported coreboot** (versions 4.1–4.11), making it a rare example of open-source firmware compatibility for AMD-based systems
- **4 DDR3 slots**, allowing for higher memory capacity compared to earlier DDR2-based boards
- **PCI Express 2.0 support**, enabling faster data transfer rates for graphics and expansion cards

## Body
### Overview
The **Asus M4A785T-M** is a **motherboard** designed for **AMD Phenom and Athlon II processors** using the **Socket AM3** socket. It was manufactured by **ASUS**, a Taiwanese company founded in **1989**, with headquarters in **Taipei**.

### Chipset and Architecture
The board features the **AMD 785G northbridge** and **AMD SB710 southbridge**, supporting **PCI Express 2.0** for graphics and expansion cards. It includes:
- **1x PCI Express 16-lane slot (2.0)**
- **1x PCI Express 1-lane slot (2.0)**
- **2x PCI Express 2.2 expansion slots**

### Memory and Storage
The **M4A785T-M** supports **DDR3 SDRAM** with **4 slots**, allowing for higher memory capacity than earlier DDR2-based boards. Storage connectivity includes:
- **6x SATA data connectors**
- **1x PATA data connector**

### I/O and Connectivity
Key I/O features include:
- **HDMI connector** for high-definition video output
- **3x USB 2.0 pin headers**
- **1x RS-232 pin header**

### Indicators and Compatibility
The motherboard includes a **green LED indicator light** and is compatible with **coreboot firmware** (versions 4.1 to 4.11). This makes it a rare example of open-source firmware support for AMD-based systems.

### Historical Context
Released in the late 2000s, the **M4A785T-M** was part of ASUS’s lineup for **AMD platforms**, offering a balance of performance and affordability. While no longer in production, it remains a notable example of ASUS’s contributions to motherboard design.

## References

1. [Source](https://www.asus.com/Motherboards/M4A785TM/specifications/)
2. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.1)
3. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.11)
4. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.2)
5. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.5)
6. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.6)
7. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.10)
8. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.9)
9. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.8)
10. [Source](https://review.coreboot.org/cgit/coreboot.git/tree/src/mainboard/asus/m4a785t-m?h=4.7)