Asus B250M-C PRO [16/26] Installing a dimm

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Chapter 1: Product introduction

System memory

Overview

This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module

(DIMM) sockets. A DDR4 module is notched differently from a DDR, DDR2, or DDR3 module.

DO NOT install a DDR, DDR2, or DDR3 memory module to the DDR4 slot.

Channel Sockets

Channel A DIMM_A1 & DIMM_A2

Channel B DIMM_B1 & DIMM_B2

DIMM_A1

DIMM_A2

DIMM_B1

DIMM_B2

• You may install varying memory sizes in Channel A and Channel B. The system

maps the total size of the lower-sized channel for the dual-channel conguration. Any

excess memory from the higher-sized channel is then mapped for single-channel

operation.

• Always install the DIMMS with the same CAS Latency. For an optimum compatibility,

we recommend that you install memory modules of the same version or data code

(D/C) from the same vendor. Check with the vendor to get the correct memory

modules.

• According to Intel

CPU spec, DIMM voltage below 1.35V is recommended to protect

the CPU.

• Due to the memory address limitation on 32-bit Windows

OS, when you install 4GB

or more memory on the motherboard, the actual usable memory for the OS can be

about 3GB or less. For effective use of memory, we recommend that you do any of the

following:

- Use a maximum of 3 GB system memory if you are using a 32-bit Windows

OS.

- Install a 64-bit Windows

OS if you want to install 4GB or more on the

motherboard.

- For more details, refer to the Microsoft

support site at http://support.microsoft.

com/kb/929605/en-us.

Visit the ASUS website at www.asus.com for the latest QVL.

Installing a DIMM

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To remove a DIMM