Like last week Swindon were again leading until Exeter equalised in the 92 minute.
Swindon's goal was scored on 17 minutes by McNamee.
The game went into a penalty shoot out with Swindon winning 4-3. Swindon's penalties were scored by McGovern, Timlin, Greer and Amankwaah. Phil Smith saved two of the Exeter penalties so it's Swindon who go through into the next round.