http://www.computer-specifications.com/specifications/AST-Premium48633E-Specs.html

https://books.google.ee/books?id=gDAEAAAAMBAJ&pg=PT2&lpg=PT2&dq=ast+premium+486&source=bl&ots=wW6rn1dleZ&sig=kZOZJLzTLwuqByaaxWxUAtYvmtM&hl=en&sa=X&ved=0ahUKEwi818TcncnVAhUmAZoKHbnPCxgQ6AEIJTAA#v=onepage&q=ast%20premium%20486&f=false

https://classictech.wordpress.com/computer-companies/ast-research-inc-irvine-calif/