The Synology RX418 provides an effortless solution for volume expansion and data backup for the Synology 1U RackStation, and allows you to add four SATA hard disk bays while in operation. With a slim chassis design, the RX418 is easy to install and use in two-post and wall-mount racks. The Synology RX418 comes with a three-year limited warranty from Synology. https://elecena.pl/product/18143582/rx418-diskstation-rx418-nas-server-expansion-unit 2021-04-30 https://elecena.pl/product/18143582/rx418-diskstation-rx418-nas-server-expansion-unit 2021-11-18 https://elecena.pl/product/18143582/rx418-diskstation-rx418-nas-server-expansion-unit 2025-09-04 https://elecena.pl/product/18143582/rx418-diskstation-rx418-nas-server-expansion-unit 2026-04-02