405 Computer Services | Orange County

(714) 962-8750

About 405 Computer 

405 Computer Service is based in Huntington Beach, California. Owned and operated by Mark Oster since 2001. We have been servicing many networks all over the county. These businesses have included:


  • Car Dealerships
  • Motorcycle Dealerships
  • Medical Offices
  • Construction Companies
  • Surf-wear companies
  • Amusement and Tourist Attractions
  • Dental Offices
  • Orthodontics
  • Manufacturing Company
  • Technology Company
  • Advertising
  • Print and Display Company
  • Restaurant POS Systems

Huntington Beach, California

HB Proud Business


Many clients are clients we have retained since I have been in business and have stayed with us more than 10 years or more. In our clientele, we have learned to modify and maintain many proprietary software packages. There are literally dozens of medical and dental office software packages that we have had to keep up with and especially when it has come to Microsoft Windows updates that have modified those packages.

We offer remote support at just a phone call away.