Expansion unit for increased storage capacity and backup for the following Synology models:
FS series: FS1018
19 series: DS2419+, DS2419+II
18 series: DS3018xs
17 series: DS3617xs, DS3617xsII
15 series: DS3615xs, DS2415+, DS2015xs
13 series: DS2413+
12 series: DS3612xs
11 series: DS3611xs, DS2411+
