standard feature; standard equipment
Used for features or equipment included as standard in a product, vehicle, or system, without extra cost.
This car comes with air conditioning as standard equipment.
Safety features became standard on the latest model.
オプション is an optional extra, while 標準搭載 refers to something included as standard.
Compound of 標準 (standard) and 搭載 (equipping, mounting). The exact historical derivation is uncertain, but the term is a straightforward modern technical compound.