UGREEN AC650 11ac Dual-Band Wireless USB Adapter – CM448

The UGREEN CM448 is a dual-band wireless USB adapter that adds or upgrades WiFi connectivity on desktop computers and laptops. This compact adapter supports 802.11ac standard with speeds up to 650 Mbps across both 2.4GHz and 5GHz bands. Perfect for students upgrading older laptops for online classes and businesses equipping desktop workstations with reliable wireless connectivity.

Key Features & Benefits

• Dual-Band Flexibility: Switches between 2.4GHz (200 Mbps) for range and 5GHz (433 Mbps) for speed, letting you prioritize stable connections or faster downloads based on your current task.
• AC650 High-Speed Performance: Delivers combined speeds up to 650 Mbps, providing smooth video streaming during lectures and lag-free video conferencing for remote business meetings.
• Compact USB Design: Plugs directly into USB ports without protruding cables or bulky antennas, making it ideal for laptops in crowded coffee shops or hot-desking environments.
• Backward Compatibility: Works with older WiFi routers using 802.11b/g/n standards while taking advantage of newer 802.11ac networks when available.
• Easy Driver Installation: Includes setup software for Windows and macOS with straightforward installation process, getting you online within minutes of unboxing.

Technical Specifications

Wireless Performance

• WiFi Standard: 802.11ac/n/g/b
• Total Speed: Up to 650 Mbps (AC650)
• 5GHz Band: Up to 433 Mbps (802.11ac)
• 2.4GHz Band: Up to 200 Mbps (802.11n)
• Frequency: 2.4GHz and 5GHz dual-band

Interface & Design

• Connector: USB 2.0 Type-A
• Form Factor: Nano adapter (compact, low-profile)
• Antenna: Internal
• Color: Black
• Dimensions: Approximately 18mm x 15mm x 7mm

Security & Standards

• Encryption: WPA-PSK, WPA2-PSK, WPA3 (depending on router support)
• Security: 64/128-bit WEP encryption
• Modulation: OFDM, CCK

System Compatibility

• Windows: 11, 10, 8.1, 8, 7 (32/64-bit)
• macOS: 10.9 and later versions
• Linux: Kernel 2.6.24 and above (driver support varies)
• Driver CD included (downloadable from UGREEN website)

Operating Conditions

• Operating Temperature: 0°C to 40°C
• Storage Temperature: -40°C to 70°C
• Humidity: 10% to 90% non-condensing

Use Cases & Applications

Desktop Computer Connectivity: Add WiFi capability to a desktop PC without installing internal cards or running Ethernet cables across your room. The UGREEN CM448 transforms wired-only computers into wireless workstations in seconds.

Laptop WiFi Upgrades: Replace outdated WiFi cards on older laptops that only support 802.11n or slower standards. Students can boost download speeds for large file transfers, online research, and streaming educational videos without buying a new computer.

Temporary Workspaces: Quickly connect borrowed or shared computers to WiFi networks in libraries, coworking spaces, or client offices. The compact design stays inserted during transport without risk of snapping off in your bag.

Business Desktop Deployments: Equip office desktops with wireless connectivity for flexible workspace arrangements. The dual-band capability reduces network congestion when multiple employees connect to the same router during video conferences.

Gaming & Streaming: The 5GHz band provides lower latency connections for casual gaming and buffer-free video streaming compared to crowded 2.4GHz networks in apartment buildings or dormitories.

Network Troubleshooting: Keep as a backup adapter when your laptop’s built-in WiFi malfunctions. IT professionals can use it for testing network connectivity issues or accessing different frequency bands during diagnostics.

Compatibility Notes: This adapter requires USB 2.0 or higher ports (also works with USB 3.0/3.1 ports). Driver installation is required on first use—download the latest drivers from UGREEN’s support page for best performance. The adapter does not support AP (Access Point) mode or WiFi Direct functionality. For optimal 5GHz performance, ensure your router supports 802.11ac and you’re within reasonable range (5GHz signals have shorter range than 2.4GHz).