| Subject | English | Portuguese |
| comp., MS | asynchronous communication | comunicação assíncrona (A form of data transmission in which information is sent and received at irregular intervals, one character at a time. Because data is received at irregular intervals, the receiving modem must be signaled to let it know when the data bits of a character begin and end. This is done by means of start and stop bits) |
| IT | asynchronous communication board | placa de comunicação assíncrona |
| IT | asynchronous communication element | transmissão e receção de dados sob a forma assíncrona |
| IT, el. | asynchronous communication interface adapter | interface de comunicação assíncrona |
| comp., MS, Braz. | asynchronous communication layer | camada de comunicação assíncrona (The layer of AJAX functionality that takes care of communication between the browser and the server) |
| IT | asynchronous communications | comunicações assíncronas |
| IT, dat.proc. | asynchronous communications interface adapter | adaptador de interface de comunicações assíncronas |