The Dell Wireless 5823e (0YW17) is a cellular modem for adding 4G LTE connectivity to a compatible computer. Dell identifies this part as the DW5823E wireless modem, so the exact model and part number are clear.
It connects through a PCIe 2.0 interface. This describes how the modem links to the host system; the source does not specify supported computer models or installation details.
The 5823e is intended for mobile network access over 4G LTE, providing a cellular connectivity option alongside other network connections.