Synology Rail Kit RKS1317 (Rail Kit Sliding) comes with sliding rails for easy server maintenance, and supports most Synology 1U/2U/3U RackStation models. RKS1317 is backed with Synology's 1-year limited warranty. Applied Models •18-series: RS2818RP+, RS818(RP)+, RX418 •17-series: FS3017, FS2017, RS18017xs+, RS4017xs+, RS3617xs+, RS3617(RP)xs, RX2417sas, RX1217sas, RX1217(RP), RS2418+ •16-series: RS18016xs+, RS2416(RP)+, RX1216sas, RS816 •15-series: RC18015xs+, RXD1215sas, RS815(RP)+, RS815, RX415 •14-series: RS3614xs+, RS3614(RP)xs, RS2414(RP)+, RS814(RP)+, RS814, RX1214(RP) •13-series: RS10613xs+, RS3413xs+, RX1213sas •12-series: RS3412(RP)xs, RS2212(RP)+, RS812(RP)+, RS812 •11-series: RS3411(RP)xs, RS2211(RP)+, RS411, RX1211(RP) •10-series: RS810(RP)+, RX410 •9-series: RS409(RP)+, RS409, RX4