Chapter 2 Introducing the BCM hardware 67BCM200/400 4.0 Installation and Maintenance GuidePower supply adapter cord (international users)The power supply adapter cord is for international (non-North American) BCM users. It connectsto the power supply on one end and to the (C-14) BCM power bar on the other end.You require one power supply adapter cord for each power supply you want to connect to thepower bar.Uninterruptable power supplyAn uninterruptable power supply (UPS) is an optional device that maintains continuous operationduring power interruption or failure conditions. The UPS provides power source monitoring andbattery backup activation so that critical BCM functionality is maintained.In a power failure situation, the UPS provides sufficient time to either correct the problem oractivate a contingency plan to sustain services. The UPS is configured to perform a gracefulshutdown of the BCM 2 minutes before the UPS battery power is drained.The BCM system supports American Power Conversion (APC) UPS devices that use a USBcontrol interface. These include the APC UPS-Smart family (for example, UPS-Smart 750,UPS-Smart 1000) and UPS-Back family (for example, UPS-Back 500 ES, UPS-Back 350 ES).The UPS control software enables the configuration of various operational settings.On BCM systems with more than one unit, the power supplies for all of the units must beconnected to a single UPS.The UPS feature is supported in all markets (110~120V and 220~240V power standards).Hard diskThe BCM200 main unit and the BCM400 main unit (standard) contain a single hard disk and harddisk bracket (see Figure 42 and Figure 43).Note: For the UPS to function correctly, connect the UPS before the BCM systemis powered up. If you connect a UPS to a running system, the UPS will notfunction.In BCM 4.0 the serial interface is not supported for UPS connectivity. Only theUSB interface supports UPS connectivity.