Owners Manual

Table 1. Back panel features (continued)
Item Indicator, button, or
connector
Icon Description
12 USB 3.0 port (2)
The USB ports are 9-pin and
3.0-compliant. These ports
enable you to connect USB
devices to the system.
Network ports indicator codes
Figure 3. LAN indicators on the QSFP OCP card
1. Link indicator
2. Activity indicator
Table 2. QSFP port on OCP card indicator codes
Connection State QSFP Upper green LED QSFP Lower green LED
No link/Not Connected Off Off
InfiniBand Physical Link - No Logical Link Green Off
InfiniBand Logical Link - No Traffic Green Green
InfiniBand Logical Link - Traffic Green Blink
InfiniBand Physical Link Issue Blink Green
Ethernet Link - No Traffic Green Green
Ethernet - Traffic Green Blink
NOTE: The LED blink speed varies according to the traffic bandwidth.
10 Dell EMC PowerEdge C6420 overview