Solution: The 703590 shares bandwidth with USB 3.0 ports and Wi-Fi 2.4 GHz. Use a USB extension cable to move the dongle away from the PC case. Disable Wi-Fi on the 2.4 GHz band temporarily to test. Also, go to BlueSoleil Tools -> Configuration -> Audio and increase the audio buffer size.
Setting up the 703590 model involves a specific workflow that differs from plug-and-play adapters:
Solution: Class 1 (100m) is theoretical open-air. Walls, metal filing cabinets, and microwaves reduce this to 20-30 meters realistically. Also, ensure the opposing device is also Class 1 (most phones are Class 2).
Title: BlueSoleil 703590 Bluetooth USB Adapter – Class 1 Long Range Dongle for PC bluesoleil 703590
Description: Upgrade your desktop or laptop with the BlueSoleil 703590, a high-performance Bluetooth 4.0 (backward compatible) USB dongle. Designed for users who need reliable connectivity and extended range, this adapter utilizes the trusted BlueSoleil driver stack for seamless device management.
Key Features:
What’s in the Box:
System Requirements:
The default Windows Bluetooth stack is notoriously limited. It handles mice and keyboards well but struggles with complex profiles like A2DP (high-quality stereo audio), FTP (file transfer with remote folders), and DUN (Dial-Up Networking). BlueSoleil’s software provides a visual "sun" interface where you drag and drop files, connect to a stereo headset, or manage COM ports with intuitive graphics.
Accept the license agreement. Choose "Complete Installation." During setup, Windows may warn you that the driver is unsigned (common for legacy software). Click "Continue Anyway" (for XP/Vista/7) or disable driver signature enforcement for later Windows versions. Solution: The 703590 shares bandwidth with USB 3
How does this legacy device stack up against a $10 Bluetooth 5.3 dongle from Amazon?
| Feature | BlueSoleil 703590 | Modern BT 5.3 Dongle | | :--- | :--- | :--- | | Range | 100m (Class 1) | 10-20m (Class 2) | | Speed | 2.1 Mbps | 48 Mbps | | Audio Codec | SBC | AAC, aptX, LDAC | | Windows Stack | BlueSoleil (Full features) | Microsoft (Basic features) | | Legacy Device Support | Excellent (DUN, FTP, SYNC) | Poor (Dropped profiles) | | Price (Used) | $8 - $15 | $10 - $20 | | Best Use Case | Industrial, long-range, old OS | Modern gaming, high-end audio |
The Verdict: If you need to transfer files to a 2005 Motorola Razr or connect a GPS receiver to Windows XP, the 703590 is superior. If you need low-latency gaming audio with Windows 11, buy a modern adapter. What’s in the Box: