FRU is an acronym of "Field Replicable Unit". It indicates a component of a computer system that can be replaced by a field service technician on a customer site. The contrasts with "CRU" or "Customer Replaceable Unit" which does not require a field service tech to perform the replacement.
FRU naming and access are defined in the IPMI (Intelligent Platform Management Interface) specification maintained by Intel Corporation here:
http://www.intel.com/design/servers/ipmi/spec.htm
FRU information is most often accessible using the IPMI protocol either via the IPMI drivers on a running computer or through a Service Processor.
These are the most common FRU devices.
The FRU components of an older AT motherboard are: Processor, RAM, RAM cache, ROM BIOS chip and CMOS battery.
A motherboard contains several integrated components. Most motherboards will contain: * An IDE controller * A SATA controller (on newer motherboards) * A floppy controller (on older motherboards) * RAM sockets * Expansion slot(s) * The BIOS chip * Power connector * Processor socket / slot * Serial ports (phased out on some newer motherboards) * Parallel ports (phased out on some newer motherboards) Many motherboards will also integrate components that can also be replaced by an add-in card: * Graphics chipset * Network controller * Sound card * USB connectors * FireWire connectors * Dial-up modem * eSATA connector
plugs in most components to allow the machine to work
"What are the components of microcomputer ?
l1 is in motherboards l2 is on processor newer processor has l3 too
upgrade, exchange components and add devices
This would depend on the motherboard. I have seen older motherboards that were still trying to use IDE as a primary but had 2 or 3 SATA connections. Newer motherboards have primarily SATA connections.
Motherboards are hardware components, not software.
Dual inline package (DIP) switch
dual inline package (DIP) switch -jazzmarazz13
Most newer motherboards will display sensor information in their BIOS. SpeedFan, a Windows program, can also read the sensors on your motherboard and processor.
Desktop motherboards all conform to one of several standard form factors, such as ATX, microATX, NLX, or mini-ITX. The motherboards in laptops, however, all have different sizes and are custom fitted for the laptop chassis. Laptop motherboards do not typically provide the number of expansion slots found in desktop motherboards.