Upgrading your Synology DS1512+ to 4GB of RAM Maximum
1. Purchase compatible memory
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145228
The first step in your Synology DS1512+ RAM Upgrade is to acquire a compatible RAM module.
Synology states the DS1512+ supports: 2GB -DDR3-1066 unbuffered So-DIMM 204pin CL=7 1.5V
Compatibility
http://forum.synology.com/wiki/index.php/User_Reported_Compatible_RAM_modules
2. Remove five screws from rear of DS1512+
Using a screwdriver, remove the five screws holding the cover panel in place on the rear side of the DS1512+.
Screw hole locations on rear of Synology DS1512+
3. Slide the cover panel off
Place your thumbs on the indicated positions and then slide the cover panel toward you to remove.
Rear view of Synology DS1512+
4. Gain Access to the expandable memory slot
Locate the expandable memory slot (pictured below)
Synology DS1512+ Expandable Memory Slot
5. Insert the RAM module into the expandable memory slot
Align the RAM module with the grooves of the memory slot. (It will only fit one way). You will need to insert the module at an angle (shown in the picture below).
Installing 2GB of RAM into Synology DS1512+ Memory Slot
6. Lock the RAM module in place
Slowly push the RAM module down until you hear a solid click. Note the two capture arms on both side should hold the RAM module in a locked position.
Synology DS1512+ Expandable Memory Slot with 2GB of RAM Installed
7. Reassemble your DS1512+
Reverse the above steps. Slide the cover panel back on and reinstall five screws to secure the cover panel
8. Power on and verify RAM upgrade
Power on your DS1512+. After a few moments you should hear a single beep indicating a successful boot. Log in to your DS1512+ and open System Information to verify that your new Synology DS1512+ RAM Upgrade is complete!