Summary: This memory works perfectly in my Synology DS1513+ NAS. It took only minutes to install, and upon bootup I now have 4GB of RAM. Highly recommend if you are getting a Synology that supports an additional RAM module.
Summary: We bought this memory to upgrade our QNAP TS-859 Pro+ unit from 1GB to 2GB. Installation was very easy and took under 10 minutes to remove the case, disconnect power from motherboard, swap RAM, reconnect power to motherboard, then put the case back on. Getting the case on and off took longer than swapping the memory. Now that we know this memory works in the TS-859 Pro+ we've already order a second stick for our second TS-859 Pro+.