The driver you're referring to appears to be a wireless LAN (WLAN) driver for devices that use the 802.11n wireless networking standard. The "80211n" part of the name refers to the IEEE 802.11n standard, which is a wireless networking standard that provides for wireless data rates up to 600 Mbps.
The "rel 480287zip" part likely indicates the driver version or release number. Without more context, it's difficult to provide a specific explanation for this part of the name.
The driver you're looking for is intended for use with Windows 7. Windows 7 is an older operating system, and it's essential to ensure that any drivers you install are compatible with your specific version of Windows 7 (e.g., 32-bit or 64-bit).