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RS-232, RS-422 and RS-485 are serial connections which can be found in various consumer electronics devices. Namely, RS-232 (ANSI/EIA-232 Standard) is the serial connection which can be historically found on IBM-compatible PCs. It is employed in many different scenarios and for many purposes, such as connecting a mouse, a printer, or a modem, as well as connecting different industrial instrumentation. Due to improvements in line drivers and cables, applications often expand the performance of RS-232 beyond the distance and speed limits which are listed in the standard.