WJ-HXE400  Hard Disk Extension Unit for CCTV Network Recorder  model WJ-NX300, WJ-NX400  (Pre-Order 45-60 Days)
อุปกรณ์ขยายฮาร์ดดิสก์ สำหรับเครื่องบันทึกกล้องเน็ตเวิร์ก  รุ่น WJ-NX300, WJ-NX400 ) : By Order 45-60 Days
 
The unit can be mounted with a maximum of 9 HDD units (hard disk drive installed in a canister).
They can be used as RAID (Redundant Arrays of Inexpensive Disk) to improve fault tolerance of the HDD. 
 
Power source:  :  220 V to 240 V AC, 50 Hz/60 Hz 
Power consumption:   85 W (175 VA) 
Dimension   430 mm (W) x 132 mm (H) x 400 mm (D)  { 16-15/16” (W) x 5-3/16” (H) x 15-12/16”(D)}
Weight : When no HDD is installed: 11 kg {24.3 lbs} When 9 HDDs are installed: 19.5 kg {43.0 lbs}
 
Hard disk drive: 3.5 type hard disk drive x (Up to 9 hard disk drives can be installed.) 
RAID 5 (Available only when 3 or more hard disk drives are installed.)
RAID 6 (Available only when 4 or more hard disk drives are installed.)
 
• Input/Output External input connector (EXT IN): High-speed serial interface, 5 Gbps (theoretical value)