FAQ: Specifications Mainboard "ECS B550A4-EM 3X00".

[#1]

FAQs about the mainboard ECS B550A4-EM 3X00

MSN 20067068

• Which processors (CPUs) can be used?

• Processors from the Ryzen 3000 series can be installed.

• What is the maximum amount of working memory (RAM) that can be installed ?

• There are 2 memory slots on the mainboard each with 16 GB RAM. The maximum capacity is therefore 32 GB.

  Module:	288-Pin DIMM
  Type:	SDRAM-DDR4
  Speed:	2666 MHz
  Voltage:	1.2 V
  Feature:	no ECC Support

  ⚠️Note⚠️ In the 32-bit editions of Windows operating systems a maximum of about 3.2 GB memory is detected.You can find more information about this on the Microsoft website.

• Which M.2 cards can be used and where can I find the slot?

• Slot	Interface	Dimensions	Key(s)	Hints
  1	PCIe oder SATA	2260, 2280	B key & M key
  2		2230	E key	WLAN only

  
  ⚠️Note⚠️ The M.2 slot is covered by the graphics card. This must therefore first be removed in order to install an M.2 SSD.

  You will need a screw with a metric M2 thread and a length between 2.5 mm and 3.0 mm. The head should have a diameter of 4 mm to a maximum of 5 mm. If the screws are not available in local specialist shops, you can find them in online shops.

• What is the front pin assignment for the mainboard?

• The front pin assignment can be seen in the figure.

  

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The information in this article refers to:

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Review Date: 2025-07-20