The "Subsystem ID (SSID)" and the "Subsystem Vendor ID (SVID)" differentiate specific model (such as an add-in card). While the Vendor ID is that of the chipset manufacturer, the Subsystem Vendor ID is that of the card manufacturer. The Subsystem ID is assigned by the subsystem vendor from the same number space as the Device ID. As an example, in the case of wireless network cards, the chipset manufacturer might be Broadcom or Atheros, and the card manufacturer might be Netgear or D-Link. Generally, the Vendor ID–Device ID combination designates which driver the host should load in order to handle the device, as all cards with the same VID:DID combination can be handled by the same driver. The Subsystem Vendor ID–Subsystem ID combination identifies the card, which is the kind of information the driver may use to apply a minor card-specific change in its operation.