Product description
Features:

USB 3.0 Port: USB 3.0 supports transfer rates of up to 5.8G bps 10 times faster than USB 2.0, ensures WiFi adapter maximum throughput performance and more stable internet connection. Backwards compatible with USB 2.0 and 1.1 devices.
Simple to Use: 1) Plug it in; 2) Install the Driver; 3)restart the computer; 4) GO. This wifi adapter is suitable for desktop and laptop, compatible with Windows XP/Vista/7/8/ 8.1 /10, Linux 2.6 or above, Mac OS X 10.6 -- 10.15 operating system.
Note: Just no drivers required for Windows 10.
NOTE:
1). You must have a dual band WiFi router with 5.8G band if you want to have a 5.8G signal. 2). The adapter's max. speed up to 867Mbps just works when you connect to 5.8G band, otherwise, it will just run at the max. speed of 300Mbps with 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 the network size, router, barriers, laptop or PC 's internal memory. 3). This WiFi adapter will not boost the speed of original router, it just transmit the wifi signal.
Specifications:

Interface: USB 3.0
Chipset: Realtek 8812BU
Antenna Type: Dual band 5DBI
Antenna Frequency: 2.412 ~2484GHz/ 5.15 ~ 5.825GH z
Signal Rate: 5GHz
Reception Sensitivity: 11a
6Mbps: -88dBm
Transmit Power: <20dBm (EIRP)
Wireless Modes: Ad-Hoc / Infrastructure mode
Environment Operating Temperature: 0?~40? (32?~104?)
Storage Temperature: -40?~70? (-40?~158?)
Operating Humidity: 10%~90% non-condensing
Storage Humidity: 5%~90% non-condensing
Transmitter button life: 100,000 times
Transmitter battery model: CR2032, 3V
Receiver battery: built-in lithium battery, 3.7V 90mAh
Receiver charging voltage: DC 5V
 

Package Contents:
Wifi Adapter* 1 Driver CD * 1 Instruction Manual* 1