Item Name Icon Description
• SC120: Up to 24 2.5-inch hard drives
SC100/SC120 Expansion Enclosure Back-Panel Features and Indicators
The SC100/SC120 back panel provides controls to power up and reset the expansion enclosure, 
indicators to show the expansion enclosure status, and connections for back-end cabling.
Figure 18. 
SC100/SC120 Back Panel Features and Indicators
Item Name Icon Description
1 DC power indicator
• Green: Normal operation. The power supply 
module is supplying DC power to the expansion 
enclosure
• Off: Power switch is off, the power supply is not 
connected to AC power, or has a fault condition
2 Power supply/cooling fan 
indicator
• Amber: Power supply/cooling fan fault is detected
• Off: Normal operation
3 AC power indicator
• Green: Power supply module is connected to a 
source of AC power, whether or not the power 
switch is on
• Off: Power supply module is disconnected from a 
source of AC power
4 Power socket (2) — Accepts a standard computer power cord.
5 Power switch (2) — Controls power for the expansion enclosure. Each 
power supply/cooling fan module has one switch.
6 Power supply/cooling fan 
module (2)
— Contains a 700 W power supply and fans that provide 
cooling for the expansion enclosure.
7 Enclosure management 
module (2)
— EMMs provide the data path and management 
functions for the expansion enclosure.
About the SCv2000/SCv2020 Storage System
25