Main Number 1-800-720-4400 International Number 1-714-338-1900 Fax Number 1-714-338-1905 Departmental Information Department Extension Email Internet Sales 111 websales@onlinemicro.com Corporate Sales 2 sales@onlinemicro.com General Inquiries 2 sales@onlinemicro.com Order Tracking Request 114 accounting@onlinemicro.com Service/Tech Support 3 tech@onlinemicro.com Accounting 4 accounting@onlinemicro.com Online Micro is located in Southern California in the city of Costa Mesa next to the John Wayne - Orange County Airport. Online Micro 215 East Baker Street Costa Mesa, CA 92626   Directions to 215 Baker St E Costa Mesa, CA 92626-4504