Technology Asus introduces Vivo notebook X403 , X409 and X509 | NewsX – NewsX September 4, 2019 johorbiznet Johor News Asus introduces Vivo notebook X403 , X409 and X509 | NewsX NewsX Asus VivoBook 14 X403, VivoBook 14 X409, and VivoBook 15 X509 Launched in India NDTV View full coverage on Google News Source: Technology News Feed