Elecom Wi-Fi Wireless LAN Adapter WDC-433DU2H Purchased in 2025. Drivers and manuals can be downloaded from the manufacturer's website: https://www.elecom.co.jp/products/WDC-433DU2HBK.html This 11ac-compatible 433M antenna wireless LAN adapter improves the actual communication speed by 3.5 times in a three-story detached house. Equipped with a high-sensitivity 180-degree adjustable antenna, it can create an optimal environment for the location of use. The 5GHz band (11ac/n/a), which is resistant to radio wave interference, supports high-speed communication of 433Mbps, and the 2.4GHz band (11n/g/b), which is a general communication band, supports 150Mbps (standard value). ■ Supported OS (Mac): macOS Catalina 10.15 / macOS Mojave 10.14 / macOS High Sierra 10.13 / macOS Sierra 10.12 / OS X El Capitan 10.11 / OS X Yosemite 10.10 ■ Wireless Standards: IEEE802.11ac / IEEE802.11n / IEEE802.11g / IEEE802.11b / IEEE802.11a ■ Frequency Bands: 2.4GHz band: 2,400~2,484MHz / 5.2GHz band (W52): 5,150~5,250MHz / 5.3GHz band (W53): 5,250~5,350MHz / 5.6GHz band (W56): 5,470~5,725MHz ■ Wireless Security: WPA2-PSK (AES: 128bit), WPA-PSK (TKIP), WEP (128/64bit)