Michael Swift replaces the suspended Michael McCarthy in the second row. He will line out alongside former captain Andrew Farley.
Former Ireland Under-20 out-half Ian Keatley has recovered from a head injury sustained in last Sunday's Magners League win over Leinster to retain his place in the team.
CONNACHT (v Dax): Fionn Carr; Mike Roberts, Gavin Duffy, Mel Deane, Liam Bibo; Ian Keatley, Frank Murphy; Brett Wilkinson, Sean Cronin, Robbie Morris, Michael Swift, Andrew Farley, John Muldoon (capt), Johnny O'Connor, Colm Rigney.
Replacements: Joe Merrigan, Ronan Loughney, Andrew Browne, Ray Ofisa, Kieran Campbell, Troy Nathan, John Hearty.