Disclaimer:  Acer is a registered trademark or Acer Incorporated

2GB 204p PC3-8500 CL7 8c 256x8 DDR3-1066 1Rx8 1.5V SODIMM. 

Manufactured by CMS

We dont use OEM or Generic Brands to avoid incompatibility

Lifetime Warranty. 

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Compatible with:
Acer Aspire One D257-13404


Maximum Memory:  2 GB
Expansion: 1 Socket(s)

In order to upgrade to maximum memory, you have to remove the 1GB Module from the socket and exchange it with the 2GB Module