| Match found at | Pin / acronym / transistor | Description of pin/acronym/transistor | Company |
| RS366 interface | -- | -- | |
| Acronym Database | ACIA | Asynchronous Communications Interface Adapter | |
| Acronym Database | ADIG | Application development interface guidelines | |
| Acronym Database | AEI | After etch inspection; Automated equipment interface | |
| Acronym Database | ALI | ATM Line Interface | |
| Acronym Database | API | Application Programming Interface; Atmospheric Pressure Ionization | |
| Acronym Database | AQI | ACCESS Query Interface | |
| Acronym Database | ASLAC | Advanced Subscriber Line Audio processing interface | |
| Acronym Database | ASLIC | Advanced Subscriber Line Interface | |
| Secure Digital (SD) Card | CD/DAT3 | Card detection / Connector data line 3 | |
| Acronym Database | CFI | CAD Framework Initiative; Common Flash-memory Interface | |
| Acronym Database | CIC | Cleanroom Interface Chamber | |
| Acronym Database | COFISLIC | Codec Filter and Subscriber Line Interface Circuit | |
| Acronym Database | CUI | Common User Interface | |
| Acronym Database | DOCSIS | Data Over Cable Service Interface Specification | |
| Acronym Database | EID | Equipment Interface Development | |
| Acronym Database | ELIC | Extended Line Card Interface Controller | |
| Acronym Database | EPIC | Extended Peripheral Interface Circuit | |
| Acronym Database | FALC | Frame And Line interface Component | |
| Acronym Database | GAIM | GSM Analog Interface Module | |