4X (Host In) - Multilane SAS (Target Out)
The SM-080 is an Adapter with two external SAS 4X Females on one side, and two multilane 32 pin connectors on the other side. The 4X connectors accept signals from the Host(s), and output signal to the Target(s)..
4X (Target Out) - Multilane SAS (Host In)
The SM-081 is an Adapter with two External SAS 4X Females on one side, and two multilane 32 pin connectors on the other side. The multilane connectors accept signals from the Host(s), and output those signals to the Target(s).