| Subject | English | Spanish |
| fin. | Ancillary System Interface | Interfaz para Sistemas Vinculados |
| fin., polit. | Common Communications Network/ Common Systems Interface | Red Común de Comunicación/Interfaz Común de Sistemas |
| IT | common communications network/common systems interface | red común de comunicación/interfaz común de sistemas |
| IT | Common system interface | interfaz de sistema común |
| gen. | European Union police mission undertaken in the framework of reform of the security sector SSR and its interface with the system of justice in the Democratic Republic of the Congo | EUPOL RD Congo |
| gen. | European Union police mission undertaken in the framework of reform of the security sector SSR and its interface with the system of justice in the Democratic Republic of the Congo | Misión de Policía de la Unión Europea en el marco de la reforma del sector de la seguridad RSS y su interrelación con la justicia en la República Democrática del Congo |
| comp., MS | Extensible Firmware Interface system partition A small portion on a GUID partition table (GPT) disk that is formatted with the file allocation table (FAT) file system and contains the files necessary to start the computer and pass execution to an operating system which resides on another partition | partición de sistema EFI (Extensible Firmware Interface) |
| IT | human-system interface | interfaz entre humano y sistema |
| gen. | mechanical interface coordinate system | sistema de coordenadas de la interfase mecánica |
| org.name. | Payroll Interface System | Sistema de conexión con la nómina de sueldos |
| commun., IT, industr. | Portable Operating System Interface for computer environment | Sistema operativo transportable de la ISO |
| commun., IT, industr. | Portable Operating System Interface Standard | Sistema operativo transportable de la ISO |
| commun., IT, industr. | Portable Operating System Interface X | Sistema operativo transportable de la ISO |
| commun., IT | property management system interface | interfaz con sistema de gestión hotelera |
| IT | Small Computer System Interface | interfaz reducido de sistemas de ordenador |
| comp., MS | small computer system interface | interfaz estándar de equipos pequeños (A standard high-speed parallel interface defined by the American National Standards Institute (ANSI). A SCSI interface is used for connecting microcomputers to peripheral devices, such as hard disks and printers, and to other computers and local area networks (LANs)) |
| IT | small computer systems interface | interfaz de sistemas informáticos pequeños |
| IT | Small Computer Systems Interface | interfaz reducido de sistemas de ordenador |
| IT | small computer systems interface | interfaz SCSI |
| IT, earth.sc. | system interface gate | puerta de interfaz sistema |
| IT | System V Interface Definition | Definición del interfaz sistema V |
| comp., MS | system-preferred interface language | idioma de interfaz definido por el sistema (The language that displays on a system when the user has not selected a user-preferred interface language) |
| el. | terrestrial satellite system interface | interfaz entre el sistema terrenal y el sistema de satélite |