Nigel Clough is wary of the potential threat of the MK Dons at the weekend.
Looking ahead to United's visit to stadium:mk he commented: "They are around the play-offs again and despite losing a few players, they remain a very dangerous side.
"On their day they are capable of taking you apart, but we will go there and concentrate on ourselves and try and expose their weaknesses."
The Blades boss says United's cup exploits has helped improve fortunes on the road in League One, adding:
"We have always had a belief at Bramall Lane, but our run in the FA Cup has lifted morale and subsequently we have started winning matches away from home in the league, that comes from successes at places like Villa Park and Craven Cottage.
"We are confident we will score goals regardless of the opposition and we aren't playing with any fear, that also comes with winning matches over a period of time."
* Tickets will be available for Blades fans (cash only) on the day from the Away Ticket Office at Milton Keynes.