Firmware: Software that makes a piece of hardware work and function. Firmware is a firm part of that hardware and doesn't have to be loaded by the user of this hardware. Firmware can be updated to increase performance of the hardware or to fix a problem of the hardware device.
Find out about firmware version: The installed IDE-hardware including the firmware version is shown during boot up of computer. You can also use "Infotool" of
Nero burning software.
IDE: "Integrated Device Elektronics" or "Intelligent Drive Elektronics" ist still the most common interface between the motherboard of a computer and a harddisk or an optical drive. When you google for IDE you will find lots and lots of information. The manual of your computer will tell you, where to find the IDE connectors on your motherboard. It will also tell you, about the IDE speed that your motherboard supports. Optical drives normally connect via IDE to the motherboard.