The unique identifier for a component in this table. The chassis and each installed component is represented by a hardware topology tree, where each node in the tree represents a component. The path to a particular component consists of one or more <component>,<instance> pairs, where each successive pair is a child of the previous parent pair. As an example, the root of the tree is the chassis and is represented by the pair 'CHASSIS, 1'. This pair indicates the first instance of the chassis. If a blade is inserted in slot 4 of the chassis, its topology path is 'CHASSIS, 1, BLADE, 4'. With this format, the components in the chassis can be determined along with their relative hierarchy to each other. Note that this TP is preceded by a single octet that specifies the TP length. This is required since this table is indexed with two indices and, therefore, the TP length must be explicitly provided. This component firmware table is indexed by this unique topology path and the numeric designations for the components are: CHASSIS, 0x01 Chassis MM, 0x02 Management Module BLADE, 0x03 Main system board of a blade POWER, 0x04 Power Supply, Power Module, etc COOLING, 0x05 Fan, blower, or other cooling device IO_MODULE, 0x06 Has I/O interface, i.e. - switch or bridge MEDIA, 0x07 Media device PROCESSOR, 0x08 Any processor, processor module, etc STORAGE, 0x09 Any type of storage device EXPANSION, 0x0A Expansion Card (not covered by more specific type) MEMORY, 0x0B Any memory device, module, etc MFRU, 0x0C Managed FRU Device PANEL, 0x0D Any sort of panel device, such as a front panel BLADE_EXPANSION_MODULE, 0x0E Expansion option (BEM) such as PEU, BSE, etc CARD_EXPANSION, 0x0F Expansion card, ie. daughter card CARD_HS_EXPANSION, 0x10 High Speed Expansion card, ie. daughter card INTERPOSER, 0x11 Interposer device CLOCK, 0x12 Clock card MUX, 0x13 Mulitplexer card ADDIN, 0x14 cKVM card & other addin cards STORAGE_MODULE, 0x15 Container of one or more Storage Devices SYS_EXPANSION_CARD, 0x16 Management card BATTERY, 0x17 A single battery BATTERY_MODULE, 0x18 Container of one or more batteries MEDIA_MODULE, 0x19 Container of one or more media devices MEMORY_BANK, 0x1A Memory banks AIR_FILTER, 0x1B Filter mechanism (bezel) SERIAL_PORT_MODULE, 0x1C Container of one or more serial ports PARENT, 0x1D Reference to parent for multi-parent support PHY_PORT, 0x1E Physical port IO_EXPANDER, 0x1F RAID card