The LB-LINK 150Mbps Wireless Nano USB Wi-Fi Adapter (BL-WN151 / BL-WN155A Series / 802.11b/g/n) is an ultra-compact, high-speed IEEE 802.11n wireless network adapter designed to provide instant Wi-Fi connectivity to desktop PCs, laptops, single-board computers, and embedded systems. Operating on the 2.4 GHz frequency band with PHY data transfer rates up to 150 Mbps, it features an integrated smart internal antenna / external high-gain antenna configuration paired with advanced MIMO/SISO wireless signal processing. Featuring a low-profile USB 2.0 interface, standard plug-and-play driver integration across Windows, macOS, and Linux distributions, and multi-tier WPA/WPA2-PSK encryption standards, it is widely utilized for retrofitting Wi-Fi on desktop computers, upgrading legacy laptop wireless cards, and enabling network communication on Raspberry Pi, Jetson Nano, and Linux-based robotics platforms.

Specifications

• Brand / Series: LB-LINK Wireless Nano / Mini USB Wi-Fi Adapter
• Model / Part Number: BL-WN151 / BL-WN155A / BL-LW05-AR5 Series
• Interface Type: USB 2.0 (Type-A Connector, backwards compatible with USB 1.1 / 3.0 / 3.1)
• Wireless Standards: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK
• Operating Frequency Band: 2.4 GHz to 2.4835 GHz (ISM Band)
• Maximum Data Transmission Rate:
  • 802.11n: Up to 150 Mbps (Dynamic)
  • 802.11g: Up to 54 Mbps (Dynamic)
  • 802.11b: Up to 11 Mbps (Dynamic)
• Wireless Transmit Power (EIRP): < 20>
• Antenna Configuration: Built-in High-Gain PIFA Onboard Ceramic Antenna (or Detachable 2dBi/5dBi Omni-Directional Antenna on BL-WN155A)
• Modulation Technology: DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM
• Receiver Sensitivity:
  • 130M / 150M: -68 dBm @ 10% PER
  • 54M: -68 dBm @ 10% PER
  • 11M: -85 dBm @ 8% PER
  • 1M: -90 dBm @ 8% PER
• Wireless Security & Encryption: 64/128-bit WEP, WPA-PSK / WPA2-PSK, WPA / WPA2, WPS Support
• Work Modes: Infrastructure Mode (Station Client), Ad-Hoc Mode, and SoftAP (Access Point) Mode
• Supported Operating Systems: Windows 11 / 10 / 8.1 / 8 / 7 / Vista / XP, Linux (Kernel 2.6.x to 5.x+ / Debian / Ubuntu / Raspbian), macOS 10.6 to 10.15
• Operating Supply Voltage: 5.0 V DC ± 5% (Powered directly via USB port)
• Power Consumption: ≤ 1.2 W (Standby: ~0.3 W / Transmitting: ~240 mA at 5V)
• Status Indicator: Single Activity Blue/Green LED (Data Link / Transfer Status)
• Operating Temperature: 0°C to +40°C
• Storage Temperature: -40°C to +70°C
• Operating Humidity: 10% to 90% RH (Non-condensing)
• Dimensions: Approx. 19 mm × 15 mm × 6 mm (Nano form factor)
• Net Weight: Approx. 3 g to 5 g (Nano model) / 15 g (External antenna model)

Features

• High-Speed 150Mbps 802.11n Connectivity: Delivers stable broadband throughput for web browsing, video streaming, file sharing, and online multiplayer gaming.
• Ultra-Compact Nano Form Factor: Low-profile design sits nearly flush against USB ports, allowing laptops to be slipped into carrying bags without removing or damaging the dongle.
• Integrated SoftAP Feature: Easily switches between receiving Wi-Fi signals (Station mode) and broadcasting a localized Wi-Fi hotspot (SoftAP mode) to share wired internet with smartphones and tablets.
• Advanced Wireless Encryption: Supports robust WPA/WPA2-PSK security standards to prevent unauthorized network intrusions and ensure secure data transmission.
• Broad OS & Single-Board Computer Compatibility: Native support on standard Windows builds with extensive kernel driver availability for Linux-based developer boards (Raspberry Pi, Orange Pi, Jetson).

Common Applications

• Desktop PC Wireless Retrofit: Adding high-speed Wi-Fi to desktop workstations, eliminating the need for long Ethernet cables.
• Single-Board Computers & Robotics: Providing reliable wireless networking and telemetry links for Raspberry Pi, BeagleBone, Jetson Nano, and Linux robotic rovers.
• Legacy Laptop Wi-Fi Upgrades: Replacing broken internal mini-PCIe / M.2 Wi-Fi cards with a plug-and-play external USB solution.
• Smart TV Boxes & Media Players: Enabling network access on Android TV boxes, DVRs, and media centers lacking onboard wireless capability.
• IoT & Industrial Gateways: Connecting embedded automation gateways and remote data logging systems to local WLAN access points.

Usage Tips

• Plug-and-Play Installation: Modern operating systems (Windows 10 / 11) include generic plug-and-play drivers and will configure the adapter automatically upon insertion. For older versions (Windows 7/XP) or legacy Linux kernels, install the corresponding Realtek/MediaTek chipset driver package.
• SoftAP Hotspot Configuration: To broadcast a hotspot from your PC, enable the "Mobile Hotspot" feature in Windows Network Settings, or configure the hostapd daemon on Linux systems while operating in Access Point mode.
• Minimizing USB Port Interference: When connecting to high-traffic desktop PCs, avoid plugging the adapter into adjacent USB 3.0 ports under heavy data transfer, as unshielded USB 3.0 devices can generate 2.4 GHz radio-frequency interference. Using a front USB 2.0 port or a short USB extension cable provides the cleanest signal reception.
• Router Band Selection: The BL-WN151 operates exclusively on the 2.4 GHz band. Ensure your wireless router has 2.4 GHz broadcasting enabled (SSID visible) if utilizing a dual-band (2.4 GHz / 5 GHz) router.
• Power Saving Settings: If using the adapter on a 24/7 robotic rover or remote headless server, disable "USB Selective Suspend" and turn off "Allow computer to turn off this device to save power" in Device Manager to ensure uninterrupted network uptime.