QXS-3 Series Specifications 11
12 and 24 Drive Expansion Chassis: Rear Panel Components
Figure 10 provides the 12 and 24 drive expansion chassis (rear panel components).
Figure 10 Expansion Chassis: Rear Panel Components
Figure 11 provides the 
12 and 24 drive expansion I/O module (ports identified).
Figure 11 Expansion I/O Module (ports identified)
LINKLINK
SERVICE
TUONI
LINKLINK
SERVICE
TUONI
1 Power supplies (AC shown) 2 Expansion I/O Module A
3 Expansion I/O Module B
1 Disabled button (used by engineering/test only) 2 Service port (used by service personnel only)
3 mini-SAS In port 4 mini-SAS Out port