provides a repository of various 802.11n drivers compatible with Windows 7 32-bit. Step-by-Step Installation Guide
Search for: "Ralink RT2870" Windows 7 32-bit driver — that chipset family powered half of all 802.11n dongles. May your ping be low, and your connection stable. 80211n wlan driver windows 7 32 bit exclusive
Depending on your hardware manufacturer, you can find specific drivers on official support pages: provides a repository of various 802