Internal Modem - Modem that connects to a PCI slot inside a newer desktop computer or ISA slot on an older computer. The Internal Modem shown at the beginning of this document is an example of a PCI Modem.
Stumps definition, the lower end of a tree or plant left after the main part falls or is cut off; a standing tree trunk from which the upper part and branches have been removed. See more. Dictionary.com
Socket(noun) an opening into which anything is fitted; any hollow thing or place which receives and holds something else; as, the sockets of the teeth. Socket(noun) especially, the hollow tube or place in which a candle is fixed in the candlestick.