The 28 year-old, who took gold at Rio 2016 in the lightweight category, debuted above the usual four-round distance against Burns and had way too much skill for his opponent.
Big plans are on the horizon for Conceicao who is going to be fast-tracked by Top Rank and be kept very busy in the coming months.
Also on the bill, lightweight Teofimo Lopez made a successful debut on the Nevada bill with a second round knockout of Ishwar Siqueiros, whilst Que Xu suffered a shock defeat to Fernando Fuentes at featherweight.
Lopez had to pick himself up off the canvas in the first round but did manage to drop his opponent four times on the way to victory.
Xu, a massive pre-fight favorite, lost a six-round points decision to Fuentes as his record dropped to 9-2-1. Fuentes is now 10-7, to his considerable credit, as all three judges carded 58-55 in his favour.
Fuentes is now enjoying an upturn in form, having won four of his last five from a run of three losses in his previous four. Xu, 26, goes back to the drawing board after losing for the first time since his pro debut back in 2014.
At super welterweight, Alexander Besputin moved to 5-0 as the Oxnard-based Russian halted Azael Cosio after six completed rounds of a scheduled eight.