Hello DanO523,   It looks like that can work for you.   Dell PowerEdge 12Gbps SAS HBA : [URL]   Support for x4 or x8 PCIe host interface Yes
Hello, We have a single-socket T440 and we're already using the two x8 slots. We need to free  up one of these slots for an additional card. Can we successfully move the Dell 12GB SAS card from an x8 slot to the open x4 slot? It is supporting an external LTO-7 tape drive. Thanks
T440 - open lane x4 slot and Dell 12GB SAS card