22 PCM-5820 Series User's Manual2.11 Keyboard and PS/2 mouse connector(CN17)The PCM-5820 Series board provides a mini-DIN keyboardconnector, which supports both a keyboard and a PS/2 stylemouse. In most cases, especially in embedded applications, akeyboard is not used. If the keyboard is not present, the standardPC/AT BIOS will report an error or failure during the power-onself test (POST) after resetting the PC. The PCM-5820 Seriesboard's BIOS standard setup menu allows you to select "All, ButKeyboard" under the "Halt On" selection. This allows non-keyboard operation in embedded system applications without thesystem halting during the POST.2.12 Power connectors2.12.1 Main power connector +5 V, +12 V (CN9)Supplies main power to the PCM-5820 Series (+5 V) and devicesthat require +12 V.2.12.2 Auxilary power connector (CN10)Supplies secondary power to peripherals that require -5 V and-12 V.2.12.3 CPU fan power connector (CN6)This connector is reserved for an optional fan, which facilitates abetter working environment for the CPU.2.13 IR connector (CN7)The PCM-5820 Series provides an IrDA port for transfer rates of115 kbps. This connector supports the optional wireless infraredtransmitting and receiving module, which is mounted on thesystem case. Configuration of the module is done through BIOSsetup.
