4-bay 1U Rackmount Expansion Unit

•  Compatible drive type: 4 x 3.5/2.5"" SATA HDD/SSD (drives not included)
•  External port: 1 x eSATA
•  Size (HxWxD):
- 44 x 430.5 x 290 mm
- 44 x 482 x 325 mm (with server ears)
•  Weight: 4.28 kg
•  Supported NAS models:
- 20 series: RS820RP+, RS820+
- 19 series: RS1219+, RS819
- 18 series: RS818RP+, RS818+
- 16 series: RS816
- 15 series: RS815RP+, RS815+, RS815