One replacement 4TB Hard Drive HDD for a Synology NAS.  Drive is brand new, certified to work with the Synology NAS models listed below.  Use the drive to add capacity to your existing NAS or to replace a failed hard drive of the same size in your NAS.

Compatible Synology NAS models:

• 17-series:RS18017xs+, RS4017xs+, RS3617xs+, RS3617RPxs, RS3617xs, RS217, DS3617xs, RX1217, RX1217RP, RX1217sas
• 16-series:RS18016xs+, RS2416+, RS2416RP+, RS816, DS916+, DS716+II, DS716+, DS416play, DS416, DS416j, DS216+II, DS216+, DS216play, DS216, DS216j, DS216se, DS116, NVR216, RX1216sas
• 15-series:RS815RP+, RS815, DS3615xs, DS2415+, DS2015xs, DS1815+, DS1515+, DS1515, DS715, DS415+, DS215+, DS215j, DS115, DS115j, DX1215
• 14-series:RS3614xs+, RS3614RPxs, RS3614xs, RS2414+, RS2414RP+, RS814+, RS814RP+, RS814, RS214, DS414, DS414j, DS214+, DS214play, DS214, DS214se, DS114, RX1214, RX1214RP
• 13-series:RS10613xs+, RS3413xs+, DS2413+, DS1813+, DS1513+, DS713+, DS413, DS213+, DS213, DS213air, DS213j, RX1213sas
• 12-series:RS3412RPxs, RS3412xs, RS2212+, RS2212RP+, RS812+, RS812RP+, DS3612xs, DS1812+, DS1512+, DS712+, DS412+, DS212+, DS212, DS212j, DS112+, DS112, DS112j
• 11-series:RS3411RPxs, RS3411xs, RS2211+, RS2211RP+, DS3611xs, DS2411+, DS1511+, DS411+II, DS411+, DS211+, DS211, DS211j, DS111