This is a Wi-Fi adapter that basically works just by plugging it into a USB port. The driver will be installed automatically if you are using Windows 8 or later. If it is not installed, please download and install it from the following link: tinyurl.com/urnbteeh 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 do not understand the meaning of words like "download" or "install," please research it 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 by regular mail, so there is no tracking or compensation. If the item does not 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 Speed: 150Mbps Chipset: RTL8188 Realtek Frequency: 2.4GHz OS: Windows XP or later The driver supports the above versions, but does not support anything other than 10. Also, we cannot answer questions about Mac and Linux as we cannot test them here. It can be used if there is a USB port and the OS is supported, so please check your 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 not necessary. We will not respond to them.