Arkansas' best win was against SDSU, not including KU.
UConn will have it's hands full with Arkansas' pace and athleticism. They get up and down the court. Similar pace to Depaul, but better team. Not the fastest team in the tournament but up there. (From one extreme SMC to another Arkansas).
For all that pace they aren't a particularly good offensive team, though it's hard to tell if that is due to injuries this year. Their defense is very good. Only behind Alabama's and ISU's IMO of the teams UConn has played.
They aren't a particularly good rebounding team, more in the middle of the pack.
They don't shoot a ton from three and they don't make a ton either.
They do get to the line a good amount though, though not a particularly good FT shooting team.
They only get assists on less than 50% of their buckets. So expect more one-on-one.
They played Creighton (L by 3), Bama (L x 2, by 15 and 3), UF (W by 19 without Castleton).
They actually foul more than UConn does (though perhaps because of higher pace)
They do defend the three well, as in opponents 3PT%. They also limit 3PT shots.