The CT-WN4320Z is a compact, 150Mbps or 300Mbps (depending on the revision) USB 2.0 Wi-Fi dongle. While it’s an inexpensive solution for adding wireless connectivity to a desktop PC or reviving an old laptop, its driver situation can be confusing.
These drivers were primarily built for Windows XP through Windows 7. If you are on Windows 10 or 11, you may need to disable Driver Signature Enforcement temporarily to install them. Quick Technical Specs Interface Wireless Standards IEEE 802.11b/g/n Max Speed 150 Mbps (on 2.4GHz) Security WEP, WPA, WPA2 Driver Wlan Usb 2.0 Ct-wn4320z