拡張 かくちょう ぎょう かい標準 ひょうじゅんアーキテクチャであれば
kakuchōgyōkaihyōjun'ākitekuchadeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 拡張業界標準アーキテクチャ

1. If it were an extensible industry standard architecture.; If it is an extensible industry standard architecture.

Ba Conditional
Computing