Amazon.com has this 600Mbps USB Wifi Adapter for $18.99, after $21.00 Instant Discount
Final Price: $39.99 - $21.00 = $18.99 Free Shipping Over $35. Editor's pick of the day. With no shipping cost, this is the lowest total price we've seen for this product. Powerful External Antenna: High gain 2dBi long-range antenna keeps good stability and gets better performance in network connection. Compatible System: Autley usb wifi adapter supports Windows 2000/XP/Vista/7/8.1/10(32-bit/64-bit), Mac OS X 10.4-10.11. Please check driver link in the description or contact us for help. Easy to Use: Install drivers, plug this wifi adapter into your computer, select station mode to connect to existing wireless network or AP(access point) mode to establish your wireless LAN network, which provides Wi-Fi to your phone, tablet, laptop etc.