Other compatible memory which you can buy locally: http://www.asustor.com/service/memory?id=memory
Description: AS6-RAM4G, 4GB DDR3L-1866 204Pin SO-DIMM RAM Module
Dimension: 67x30x10 (mm)
Applied Model: AS6302T / AS6404T / AS61 Series/ AS62 Series / AS50 Series / AS51 Series
Support mixed capacity
For AS50 / AS51 / AS61 / 62 Series
1. When expanding memory, please ensure that both memory modules you are installing are of the same size.
2. When purchasing 8GB RAM modules, due to platform limitations, you will only be able to install a single 8GB RAM module. It is not possible to have two 8GB RAM modules installed. Please see the graphic below.
For AS50 / 51 Series
3. Installable RAM module combinations are as follows:
- Single 1,2,4, 8GB module installed in the first memory slot