Blades boss David Weir praised United's professionalism, after watch his side progress to the second round of the Johnstone's Paint Trophy.
Speaking after the 5-3 penalty shootout success over Scunthorpe United at Glanford Park, following a goalless draw in normal time, Weir felt his side deserved to advance to the next round of the competition.
He remarked: "First and foremost I am pleased that we won the tie at what is a very difficult place to come.
"We just want to get that winning habit and winning a penalty shootout will do the confidence no harm.
"The lads had to show character and composure in the shootout and passed with flying colours."
Analysing the performance in greater detail Weir added: "I thought we were very good in the first-half, but in the second-half our standards and tempo dropped slightly.
"Scunthorpe gave us good test and we expected that because it is a good club that is well managed and tactically they challenged us.
"It was a good game of football, but we do need to get more end products in the final third and I am confident it will come."
*The draw for the second round will be made on Saturday morning, live on Sky Sports Soccer AM show.