ASROCK AD2550R/U3S3 User Manual download pdf (Page 23)

2.3 Installation of Memory Modules (SO-DIMM)

AD2550RA/U3S3 / AD2550R/U3S3 / AD2550R motherboard provides two 204-pin

DDR3 (Double Data Rate 3) SO-DIMM slots.

1. It is not allowed to install a DDR or DDR2 memory module into DDR3

slot; otherwise, this motherboard and SO-DIMM may be damaged.

2. Please install the memory module from DDR3_A2 slot for the rst

priority.

Installing a SO-DIMM

Please make sure to disconnect power supply before adding or

removing SO-DIMMs or the system components.

Step 1. Unlock a SO-DIMM slot by pressing the retaining clips outward.

Step 2. Align a SO-DIMM on the slot such that the notch on the SO-DIMM

matches the break on the slot.

The SO-DIMM only ts in one correct orientation. It will cause perma-

nent damage to the motherboard and the SO-DIMM if you force the SO-

DIMM into the slot at incorrect orientation.

Step 3. Firmly insert the SO-DIMM into the slot until the retaining clips at both

ends fully snap back in place and the SO-DIMM is properly seated.

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ASROCK AD2550R/U3S3 User Manual Page 23