Brand New Sealed USB WiFi Adapter-Dual Band 2.4G/5G WiFi Dongle 802.11 ac Mini Wireless Network Card 600Mbps with High Gain Antenna for PC Laptop Desktop Windows XP/Vista / 7-10 Mac Worth $19 Before using ,please also note this below: 1. Support Systems: Win10/8/8.1/7/Vista/XP/2000, Mac OS X 10.6-10.13 ,Not support Linux, TV,Projector,Printer 2. Standard: IEEE 802.11 b/g/n 2.4GHz, IEEE 802.11 a/n/ac 5.0GHz ,Built -in Antenna,USB 2.0 3. 600Mbps Wifi adapter's max speed is up to 433Mbps when you connect to 5G band,While it tops out at 150Mbps in 2.4G.Normally,your PC's network speed can't up to the wifi adapter's speed as it depends on many factors,Such as your network size,router,barriers,laptop or PC 's internal memory. 4. 5 Ghz mode stands out within short range. If your WiFi adapter is closed to the router, then wifi signal will be stronger under 5 GHz than 2.4 GHz .Now You want to have fast speed in watching video and playing online games, We suggest that you should connect to the 5G band. If your WiFi adapter is far away from the router, and you just want to surf the website, you’d better connect to 2.4G band for better and stable signal. 5. This usb wifi adapter only can receive network signals, but can not strengthen it, If you want to get booster function, then you choose a wifi extender. 6. It is different for the program between our usb wifi adapter with notebook's built-in netword card,The ablity to receive wifi for notebook with built-in network card is no stronger than mobile phone, While external network card is not better than notebook.The same router,From the ablity to receive wifi,the speed of the phone will be faster than computer. 7. Don't long-term shaking and pluging and unplugging,there may be looseness. When you go for a travel ,please plug it out in your bag. 8. If the wifi adapter stop working suddenly, Please unplug and replug the wifi adapter and then reinstall the driver or update the driver manually. 9. If the connection is unstable, please check your signal strength and signal channel. 10. If you meet a problem about the driver can not be installed on Mac 10.13.3 or Mac 10.13.4 system, please follw the suggestion steps to resolve the problem. 1.Find out"system preferences 2.Click: Security and privacy 3.Then click"allow" Features & details 👍Innovative mini dual band wireless adapter, the newest and most powerful wifi technology - 3 times faster than wireless N speeds. Dual band reduces interference for better connections to more wireless networking. 👍Works with any wifi routers, by using AC600 wireless adapter, you can upgrade your PC,laptop or Mac to work with the latest AC wifi router for faster speed and extended range. 👍High speed 802.11ac wireless adapter, up to 600Mbps wifi speeds on 5GHz (433Mbps) or 2.4GHz (150Mbps) bands. 5G wifi is ideal for online gaming and seamless HD video streaming. 👍Upgraded version supports for win 10 / 8 / 7 / XP / Vista ( 32-bit/64-bit ) and Mac OS X 10.6 ~ 10.15, No CD Disk required or Free downloading the driver,Just like plug and play.Get rid of clumsy CD disk and complicated install steps,And simple plug the usbnovel wireless USB wifi adapter into your Desktop, Laptop or PC,then choose the correct driver to install and Then choose your network and enter the password.(❌Not support Linux and AP Mode,TV, Projector, Printer)