Mario has expertly supported me for over 4 years in all my IT needs at 2 businesses I own. From relatively basic system maintenance to complex network installations he has executed successfully every time without fail. He is dependable, honest, punctual and efficient. Perhaps most impressive is his ability to trouble shoot and fix system failures calmly and quickly in the midst of crisis. He would be a huge asset to any organization and he's a real joy work with. He has saved us time and money and improved productivity immensely. There isn't anyone else I would call. .

I was working for Corona Chamber of Commerce for over 5 years, and Mario, the owner of PC Masters, was assisting us with IT support. He is knowledgable in his field, and based on his excellent customer service and quality work, I would recommend him to any business (small or large) needing IT assistance ranging from network implementation/support to computer systems maintenance. Norbert Cichocki Community Manager www.ShopCorona.com