GIGABYTE B550M DS3H AC R2 AM4 mATX Motherboard
- Processor Socket: Socket AM4
- Chipset Type: AMD B550
- Chipset Family: AMD
- RAM Memory Technology: DDR4
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A well-rounded micro-ATX AM4 board for a compact build, with the memory, storage and wireless connectivity most buyers need already onboard.
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ASIN: B0FDLCT35HCategory: Motherboards
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Overview
The B550M DS3H AC R2 is a micro-ATX AM4 motherboard for Ryzen 5000, 4000 and 3000 series processors, with DDR4 memory support, built-in WiFi 5, and two M.2 slots for NVMe storage.
As a micro-ATX board it fits smaller cases than a full ATX build while keeping four DIMM slots and dual M.2 storage, which is the tradeoff most buyers of this size are making. The 5+3 power phase design and VRM heatsinks are aimed at steady power delivery under sustained load rather than extreme overclocking headroom.
- 4x DDR4 DIMM slots with XMP support
- PCIe 4.0 x16 main slot
- 4x USB 3.2 Gen 1 Type-A ports
- RGB Fusion lighting headers
Who it's for
Suits builders assembling a compact AM4 system who still want two M.2 drives and onboard WiFi without adding a card. Less suited to anyone chasing maximum overclocking on a high-end Ryzen chip, where a full ATX board with a stronger VRM would do more.
Pros and cons
- Supports three generations of AM4 Ryzen processors
- Two M.2 slots for NVMe storage
- Built-in WiFi 5 and gigabit LAN
- Compact micro-ATX form factor
- Only one M.2 slot runs at PCIe 4.0 speed
- 5+3 VRM phases are modest for heavy overclocking
Performance notes
The board supports Ryzen 5000, 4000 and 3000 series AM4 processors with a 5+3 phase VRM under a heatsink for power delivery under load. Four DDR4 DIMM slots support Extreme Memory Profile settings for rated memory speeds, and storage runs across one PCIe 4.0 M.2 slot, one PCIe 3.0 M.2 slot and a PCIe 4.0 x16 slot with a reinforced PCIe EZ-Latch mechanism for graphics cards.
Specifications
| Brand | Gigabyte |
|---|---|
| Dimensions & fit | |
| Ram Memory Maximum Size | 128 GBlower than 55% of 23 motherboards |
| Item Weight | 1.1 pounds |
| Item Dimensions L x W x H | 8.8 × 8.8 × 1 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Power & efficiency | |
| Main Power Connector Type | 24-Pin |
| Compatibility & installation | |
| Graphics Card Interface | PCI Express |
| Compatible Devices | Personal Computer |
| Warranty & support | |
| System Bus Standard Supported | SATA 3 |
| Warranty Description | 3 years |
| Other details | |
| Processor Socket | Socket AM4 |
| Chipset Type | AMD B550 |
| Chipset Family | AMD |
| RAM Memory Technology | DDR4 |
| CPU Model | Ryzen 5 |
| Memory Slots Available | 4 |
| Total PCIe Ports | 2 |
| Total Usb Ports | 6 |
| Total SATA Ports | 4 |
| Number of Ethernet Ports | 1 |
| Platform | Windows 11 |
| Number of Items | 1 |
| Number of Ports | 10 |
| Total Number of HDMI Ports | 1 |
| Mfr Part Number | B550M DS3H AC R2 |
Closest rivals on specs
ASUS B760M-AYW WiFi D4 II LGA 1700 Motherboard- Item Weight 1.1 vs 1.5 pounds (-27%)
- Memory Storage Capacity 128 vs 96 GB (+33%)
ASUS ROG Crosshair X870E Dark Hero AM5 Motherboard- Memory Storage Capacity 128 vs 256 GB (-50%)
- Ram Memory Maximum Size 128 vs 256 GB (-50%)
Frequently asked questions
Which processors work with the Gigabyte B550M DS3H AC R2?
It supports AMD Ryzen 5000, 4000 and 3000 series AM4 processors.
Does this motherboard have WiFi built in?
Yes, the AC in its name refers to onboard WiFi 5 in addition to gigabit LAN.
How many M.2 slots does the B550M DS3H AC R2 have?
Two, one running at PCIe 4.0 and one at PCIe 3.0.