Focusrite Saffire Pro 40 + FW800, 3M Cable + Apple FW800 to Thunderbolt 3 Adapter. FW800 Cable, 3m in length. Apple FW800 to Thunderbolt 2 Adapter - Official Apple one costing £40 new. As I have just upgraded my Mac to an Apple Silicon one it turns out that the drivers do not support it, hence its up for sale.
eBay