NOTE: This is eSATA case only. HDD sold separately.
1.5U standard 19" rack case
Connect master device via eSATA or USB
eSATA port transmission speed up to 3Gbps
USB 3.0 port data transmission higher than normal
Powerful R / W performance: read > 64MB/s, write >64MB/s
Max support Internal 4 SATA HDD up to 24TB
Power Supply: AC 100~240V, 50/60Hz
Power Consumption without HDD: 6.8W
NOTE: If USB is used its for back up only on recorders. Its not an extension of your HDD's where you get additional storage. You would have to select what video you want and then save it if connected by USB. Just like a normal USB thumb drive that you would use if you wanted to save some specific video and send to someone.