Mark McCall has rung the changes ahead of his side's trip to Cardiff for the final pool game of this season's Heineken Cup.
Ulster must score the maximum five points against Cardiff (four points for the win and one bonus point) to be in with a glimmer of hope of progressing to the next stage of the competition. After that, qualification is out of their hands.
McCall has made five personnel changes and one positional change following last weekend's win over Gloucester.
At full-back, Paddy Wallace is favoured over Bryn Cunningham, who has played in every competitive match so far this season and who is named amongst the replacements, while Tyrone Howe's injury sees flyer Andrew Maxwell given a start on the left wing.
In the front row, Simon Best moves from loose to tight-head prop, while Paul Shields and Ronan McCormack return to the XV ahead of Rory Best and Rod Moore who both revert to the bench.
In the second row, Rowan Frost replaces Gary Longwell, who is rested having reached his 50th European Cap landmark last weekend against Gloucester while in the back row Campbell Feather makes way for Andy Ward.
Elsewhere, scrum-half Reece Spee is named ahead of Neil Doak on the bench.
Ulster XV:
15 - Paddy Wallace, 14 – Tommy Bowe, 13 - Paul Steinmetz, 12 - Kevin Maggs, 11 - Tyrone Howe, 10 - David Humphreys, 9 - Kieran Campbell, 1 - Ronan McCormack, 2 - Paul Shields, 3 - Simon Best, 4 - Rowan Frost, 5 - Matt McCullough, 6 - Andy Ward, 7 - Neil Best, 8 - Roger Wilson.
Replacements:
16 - Rory Best, 17 - Rod Moore, 18 - Matt Mustchin 19 - Campbell Feather, 20 - Reece Spee, 21 - Adam Larkin, 22 - Bryn Cunningham.
