20 PCM-5820/5820L User's Manual2.11 Keyboard and PS/2 mouse connector(CN17)The PCM-5820/5820L board provides a mini-DIN keyboard connec-tor, which supports both a keyboard and a PS/2 style mouse. Inmost cases, especially in embedded applications, a keyboard is notused. If the keyboard is not present, the standard PC/AT BIOS willreport an error or failure during the power-on self test (POST) afterresetting the PC. The PCM-5820/5820L board's BIOS standardsetup menu allows you to select "All, But Keyboard" under the"Halt On" selection. This allows non-keyboard operation inembedded system applications without the system halting duringthe POST.2.12 Power connectors2.12.1 Main power connector +5 V, +12 V (CN9)Supplies main power to the PCM-5820/5820L (+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-5820/5820L provides an IrDA port for transfer rates of115 kbps. This connector supports the optional wireless infraredtransmitting and receiving module, which is mounted on the systemcase. Configuration of the module is done through BIOS setup.
