A hat-trick from Ciaran Kilduff was enough for struggling Kildare County to record their first cup win of any kind since June 2005 at Station Road.
In doing so, he became only the third ever Kildare County player to register a hat trick.
Ironically, the previous two men who scored hat-tricks for the Thoroughbreds were in the Kildare dug-out tonight, manager John Ryan and assistant manager Barry O'Connor.
Kilduff, who is spending the season at Kildare County on loan from Shamrock Rovers, collected the match ball after a trio of neat finishes to ensure that Kildare would not be victims of a giantkilling act.
However, this was no walk in the park for County and they had to endure a few nervous moments before the had the game won.
Kilduff opened the scoring in the 17th minute when he raced onto John Broderick’s flick and lobbed over Mark Anthony McGinley.
Willie Tyrell had the ball in the net for the hosts just before half time but he saw his effort ruled out for a push on a Fanad defender.
The visitors weren't without their chances though and PJ Hagan spurned a glorious chance to equalise in the 58th minute after he had been put through by Paddy McGrenaghan.
The last 15 minutes of a game is normally where Kildare become nervous but two well-taken goals from Kilduff after Colin Fortune passes ensured County’s passage through to the next round.
Kildare County: O'Neill; Clarke, Tyrell, Roche, Clancy; Brady, Kavanagh (Morgan, 87 mins), Fortune, Slattery (Isaaka, 80); Kilduff, Broderick (Robinson, 55).
Fanad United: McGinley; Friel, Doherty, Lynch (McElwain, 85 mins), Sweeney; P Patton (Sheridan, 66), McGrenaghan, Nash, D Patton (McLaughlin, 80); McNulty, Hagan.
Referee: Sean Grant (Wexford).