This is a Wi-Fi adapter that basically just plugs into a USB port. It supports both 2.4GHz and 5GHz. It also supports SoftAP. The driver is built-in. If your computer doesn't have the driver, plugging in this device will recognize it as a CD-ROM or USB memory, allowing you to install from there. If there is a defective product, please contact us via navigation. We will exchange it. We cannot respond to issues mentioned in ratings or comments. If you don't understand the meaning of words like "download" or "install," please research them yourself. Please comment to change the quantity. A 5% discount is available for bulk purchases of 10 or more, and a 10% discount for 50 or more. There are no other discounts. Shipping is via regular mail, so there is no tracking or compensation. If the item doesn't arrive, we will request an investigation, but we will not accept cancellations. The following additional fees are required to change the shipping method: Rakuraku Mercari Delivery == 165 yen Yuyu Mercari Delivery == 185 yen Click Post == 135 yen Letter Pack Light == 340 yen Letter Pack Plus == 505 yen The supported environment and specifications are as follows: Standard == IEEE802.11b/g/n/ac Speed == 600Mbps Chipset == RTL8811 Realtek Frequency == 2.4GHz / 5GHz OS == Windows XP and later The driver supports the above versions, but does not support anything other than 10. Also, we cannot test on Mac and Linux, so we cannot answer questions about them. If you have a USB port and the OS is supported, it should work, so please check your own device before asking questions like "Will it work on ××?" We do not accept cancellations except in the case of a problem with the product. Purchase application comments and greetings after purchase are completely unnecessary. We will not respond to them.