Deon Burton and Stefani Miglioranzi struck in either half to secure Swindon victory against Wycombe.
The home side took the lead on 10 minutes when Burton fired home from fellow striker Tommy Mooney's pass.
They doubled their lead after 67 minutes when Miglioranzi turned well and curled home a left-foot shot.
Wycombe had their chances but Gavin Holligan miscued from three yards and Jermaine McSporran saw a shot saved.
Swindon: Evans, Gurney, Nicholas, Heywood, Robinson, Duke,
Lewis, Miglioranzi, Hewlett, Mooney, Burton.
Parkin, Howard, Ruster, Reeves.
Wycombe: Talia, Senda, Vinnicombe, Thomson, Branston, Currie,
Brown, Bulman, Simpson, McSporran, Holligan.
Roberts, Mapes, Ryan, Bell.
Referee: A Butler (Nottinghamshire)