Product Description The Synology Rail Kit RKM114 (Rail Kit Mounted) comes with a fixed rail solution for easy server installation, and supports most Synology 1U RackStation models. The RKM114 comes with a Synology 1 year warranty for your peace of mind. Compatible models Rack mounting depth: 22.4 - 28.3 inches (570 - 720 mm) 19 Series: RS1219+ 18 Series: RX418 16 Series: RS816 15 Series: RS815, RX415 12 series: RS812(RP)+, RS812 11 Series: RS411 10 series: RS810(RP)+, RX410 9 Series: RS409 (RP)+, RS409, RX4 Rack Mounting Depth: 22.4 - 31.9 inches (570 - 810 mm) 18 series: RS818(RP)+ 15 Series: RC18015xs+, RS815 (RP)+ 14 series: RS814(RP)+, RS814 Set Contains: Synology RKM114 rack accessory