He currently serves on the Executive Committee. His daughter, Tiffany, received her B.F.A. in Art History, Theory, and Criticism from MICA in 2012, and her Master of Arts in Teaching (M.A.T.) in 2014. 

Tsui is a networking industry veteran with over 15 years of marketing and business development experience and 15 years in venture capital management. He has broad knowledge and investment experience in the networking, multimedia, and Internet Infrastructure area.

His prior operational roles included serving as vice president of Marketing for Precept Software, a network video software company which was acquired by Cisco Systems in 1998. He was also vice president of marketing and business development for First Virtual Communications. Prior to that, he was a senior business executive for the early years of Cisco Systems, 3Com/Bridge Communications, and Hewlett-Packard.

Tsui has funded and worked with numerous high-tech startup companies as an angel and venture investor. He has helped in starting up and investing in hundreds of companies in Information Technology, Communications, Media, and Internet area.

He holds a B.S.E.E. degree from the University of California, Berkeley, and an M.B.A. from Santa Clara University. He was the past president and board member of the Asia America MultiTechnology Association (AAMA) and an advisory board member of Santa Clara University's Center for Innovation and Entrepreneurship (CIE). He also sits on the board of Silicon Valley Community Media KMVT15 and the board of Transparent Fish Fund/Ping Foundation.