In the back's Isaac Boss returns as scrum half, with Paul Marshall starting the match on the bench.
The pack see's Declan Fitzpatrick replace an injured Tom Court at loose head. Ed O'Donoghue starts at No 4, with Dan Tuohy moving to the replacements.
Commenting on the Magners League clash, Ulster Coach Brian McLaughlin said: "Saturday night is going to be a really big game for us. It is one that we have got to turn up to, get our act together and play in front of our own fans at Ravenhill, to show them exactly what we are capable off.
"Training has gone very well this week, despite the weather. We have been fortunate to get the use of the indoor facility at the Sports Institute of Northern Ireland at Jordanstown, so our sessions have be very productive.
"We are really looking forward to the weekend because in the last two games we have not done ourselves justice; we have had disappointing displays against the Scarlets and Cardiff. We just want to get back to Ravenhill and play the way we can play, and play for our fans."
Ulster Team:
(15-9) Jamie Smith, Andrew Trimble, Darren Cave, Paddy Wallace, Simon Danielli, Niall O'Connor Isaac Boss
(1-8) Declan Fitzpatrick, Rory Best, BJ Botha, Ed O'Donoghue, Ryan Caldwell, Stephen Ferris, David Pollock, Chris Henry (C )
Ulster Replacements:
(16-22) Andi Kyriacou, Bryan Young, Dan Tuohy, Robbie Diack, Paul Marshall, Ian Whitten, Timoci Nagusa
Guinness PRO12
Suite 208, Alexandra House,
The Sweepstakes
Ballsbridge, Dublin 4, Ireland