The FAN 12012025_4 is a 120mm x 120mm x 25mm 4-pin PWM fan. It is a replacement fan for Synology NAS devices, including the DS1819+, DS1817+, DS1817, and DVA3219.
The Synology-03-402G863B1 is a 2GB DDR3L-1600 SO-DIMM memory module that is compatible with a wide range of Synology NAS servers. It is a high-quality and reliable memory module that can help to improve the performance and stability of your NAS server.