Other than the MSA 204x the connection method of the MSA 1040 is fixed and cannot be changed.
You have the choice:
FC / SAS / 1G iSCSI / 10G iSCSI
HP MSA 1040 2-port Fibre Channel Dual Controller LFF Storage1 E7V99A
HP MSA 1040 2-port Fibre Channel Dual Controller SFF Storage2 E7W00A
HP MSA 1040 2-port SAS Dual Controller LFF Storage3 K2Q90A
HP MSA 1040 2-port SAS Dual Controller SFF Storage4 K2Q89A
HP MSA 1040 2-port 1G iSCSI Dual Controller LFF Storage5 E7W01A
HP MSA 1040 2-port 1G iSCSI Dual Controller SFF Storage6 E7W02A
HP MSA 1040 2-port 10G iSCSI Dual Controller LFF Storage7 E7W03A
HP MSA 1040 2-port 10G iSCSI Dual Controller SFF Storage8 E7W04A
You need to order the model you need, probably the 10G iSCSI (for future faster use) ?