DX213
以下的圖片是擷取自網路, 經確認在實際銷售的版本是採用黑色外殼, 類似 DS212j 但為黑色, 且硬碟為不可抽換式.

DX213 (2bay 擴充機) / DX513 (5bay 擴充機):
透過與以下不同機種的搭配,可:
擴充原有儲存空間: DS710+, DS712+, DS1010+, DS1511+, DS1512+, DS1812+
作為獨立儲存空間: DS112, DS112+, DS212+, DS213+, DS412+, DS413
DX513
DX513 官方規格連結
至於它和 Dx510 有何不同? 網友自己比較一下囉, 因為小弟也沒有用過 DX510.
(節錄)
Technical Specifications
Internal HDD/SSD 3.5" or 2.5" SATA(II) X 5 (hard drives not included)
Expansion Port X 1
Hot Swappable HDD Yes
Volume Type Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 10, RAID 5, RAID 5+Spare, RAID 6
Size (HxWxD) 157mm X 248mm X 233mm
Weight 3.91KG
System Fan 80x80mm X 2
Noise Level1 30dB(A)
Power Recovery Sync with the connected DiskStation (Default Mode)
AC Input Power Voltage 100V to 240V
Power Frequency 50Hz to 60Hz, Single Phase
Operating Temperature 5°C to 35°C (40°F to 95°F)
Storage Temperature -10°C to 70°C (15°F to 155°F)
Relative Humidity 5% to 95%RH
Maximum Operating Altitude 10,000feet
Power Consumption2 45.1W (Access), 16.5W (HDD Hibernation)
Supported Models3 DS710+, DS712+, DS1010+, DS1511+, DS1512+, DS1812+
DS112, DS112+, DS212+, DS213+, DS412+, DS413 (use as independent volume)
其他資源
DX213 開箱
NAS ESATA Port Multiplier