機種

1. Origins, structure, and basic meaning

• Structure: 機種 (きしゅ) means a particular model or type of machine or device. 機種では limits compatibility; 機種を尋ねる asks for a recommendation.
• Basic usage: A feature is unavailable on old models; a customer asks for a light, manageable model.

2. Common pitfalls and similar expressions

• Model excluded by compatibility and model sought by criteria
  • The first sentence concerns support limits; the second concerns selection requirements. The word identifies a model category rather than one individual unit.