Welcome to our shop! 1. Chipset: Realtek RTL8723BU high-quality chip, 4.0 long-range function + 2.4G WIFI function. 2. Built-in Dual Antenna: Strong signal, latest IEEE802.11 a/b/g/n standard network. 3. USB 2.0 Interface: Also compatible with USB 3.0/USB 1.1, 2.4GHz WIFI frequency. 4. Transmission Speed: 2.4G up to 150Mbps, supports one-button network connection and soft AP mode. 5. Multi-OS Compatibility: Suitable for Windows and Linux systems. Brand New Item Type: Wireless Network Card Model: W87 Supported Standards and Protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMACA with ACK Interface Type: USB Interface Frequency Range: 2.4~2.4835GHz Working Channel: 1-14 Modulation Method: 802.11 G/N: OFDM; 802.11b: CCK(11, 5.5Mbps), QPSK(2Mbps), BPSK(1Mbps) Transmission Rate: 802.11b: 11, 5.5, 2, 1 Mbps; 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps; 802.11n: up to 150 Mbps Receiving Sensitivity: 130M: -65dBm@10% PER; -108M: -65dBm@10% PER; 54M: -65dBm@10% PER; 11M Transmission Distance: Indoors up to 15 meters, outdoors up to 100 meters (varies depending on the environment) RF Power: 16dBm (max) Antenna Gain: Built-in antenna 1-5Dbi Supported System: For Windows XP, Vista, Win 7, Win 8, Linux, OS Operating Environment: Operating Temperature: -20℃ to 45℃; Storage Temperature: -40℃ to 70℃; Operating Humidity: 10% to 90%RH non-condensing; Storage Humidity: 5% to 90%RH non-condensing Other Technical Parameters: Provides two working modes: centralized control (infrastructure) and peer-to-peer (ad-hoc) Includes: 1 x Wireless Network Card 1 x Instruction Card 1 x Optical Disc Customer satisfaction is our top priority. If you encounter any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.