LPC, FWH and SPI These terms are used on PC/x86 motherboards.LPC = low pin count interface (basically replaced the legacy ISA bus stuff)FWH = firmware hub (a chip/hub used to store the BIOS codes)SPI = serial flash chip using the SPI bus/interface (basically a FWH with less pins)Answers to your questions...1. LPC is usually part of the south bridge or ICH (I/O control hub), and the FWH and SPI are related to the BIOS ROM.2. We use these terms/alphabets when discussing the BIOS, hubs/chips or busses related to an x86 motherboard.3. LPC is a bus (or a port) that other circuits/chips can connect to on a motherboard. For example the PS/2 type keyboard & mouse ports (along with a few other I/O functions) are connected to an LPC-type chip which connects to the LPC port on the ICH. FWH are SPI are typically thought of as chips (some insist it's a hub). This is used to store the BIOS firmware/codes. For example, the Phoenix/Award BIOS or AMI BIOS (or other equivalent BIOS) codes are stored in this FWH or SPI serial chip.
Identifying Components Every Chip have Identifier. - Google is your friend. - “intel gd82559”. - Intel Network controller. Many components are associated with surrounding components or interface. - COM2: Serial controller. - SCSI interface Buffer memory