E-ub5 Bluetooth Usb Dongle Driver [verified] -

Title: The Ultimate Guide to the E-UB5 Bluetooth USB Dongle: Drivers, Installation, and Troubleshooting

Meta Description: Stuck trying to get your generic E-UB5 Bluetooth dongle to work? Here is everything you need to know about drivers, Windows 10/11 compatibility, and fixing common connection issues.

Method 3: Realtek RTL8761B Driver (For Newer E-UB5 5.0 Dongles)

If your E-UB5 supports Bluetooth 5.0, it likely uses the Realtek RTL8761B chip. The correct driver is available via Microsoft Update Catalog:

  1. Go to the Microsoft Update Catalog website.
  2. Search for “Realtek Bluetooth 5.0 RTL8761B” .
  3. Download the latest .cab file compatible with your Windows build (e.g., for 64-bit).
  4. Open the .cab with 7-Zip or double-click to mount.
  5. Extract the .inf and .sys files to a folder.
  6. In Device Manager, right-click the unknown device > Update driver > Browse > point to that folder.
  7. Check Include subfolders and install.

Alternatively, you can try the driver from Realtek’s official site under “Bluetooth Adapter ICs” – RTL8761B driver version 1.9.106.0 or newer.

Note: After installing Realtek drivers, you may need to disable USB Selective Suspend in Power Options to avoid disconnections. e-ub5 bluetooth usb dongle driver

Part 5: Installing on Windows 7 and 8.1

Windows 7 lacks native Bluetooth 4.0 support. You must install a third-party stack.

For CSR E-UB5:

  1. Download CSR 4.0 Bluetooth Dongle Driver (also known as “CSR BlueCore 4.0”).
  2. Uninstall any previous Bluetooth software from Control Panel.
  3. Run the installer. Windows 7 will ask for driver signature approval – click “Install anyway”.
  4. After install, reboot. Pairing devices works identically to Windows 10.

For Broadcom E-UB5 on Windows 7:

  1. Download Broadcom Bluetooth Driver for Windows 7 from Lenovo or Dell support.
  2. Extract the package, run btwsetup.exe.
  3. Choose “Full installation” to get the Broadcom Bluetooth tray utility.
  4. Reboot.

FAQ: E-UB5 Bluetooth USB Dongle Driver

Key Specifications of the E-UB5 Dongle

Before diving into drivers, understanding the hardware helps in troubleshooting: Title: The Ultimate Guide to the E-UB5 Bluetooth

  • Bluetooth Version: 5.0 (backward compatible with 4.0, 3.0, 2.1)
  • Chipset: Usually Realtek RTL8761B or Cambridge Silicon Radio (CSR) 8510
  • Range: Up to 20 meters (Class 2)
  • Data Rate: Up to 3 Mbps
  • OS Support: Windows 7, 8, 10, 11; Limited Linux and macOS support
  • Profile Support: A2DP (audio), HID (keyboard/mouse), PAN (internet sharing), SPP (serial), etc.

Knowing the chipset is critical because “E-UB5” is a marketing name. The actual driver depends on whether your dongle uses a CSR, Realtek, or Broadcom chip.

Error 2: Bluetooth icon disappears after Windows Update

Cause: Windows Update sometimes overwrites the custom CSR driver with a generic Microsoft driver that breaks functionality.

Fix:

  • Roll back the driver: Device Manager > Bluetooth device > Properties > Driver > Roll Back Driver.
  • Alternatively, use Group Policy to prevent driver updates for that specific hardware ID.

3. Supported Bluetooth Versions & Profiles

Core Version: Bluetooth 4.0 (with optional 4.1/4.2 features via firmware update) Method 3: Realtek RTL8761B Driver (For Newer E-UB5 5

| Profile | Function | Support Level | | :--- | :--- | :--- | | A2DP | High-quality audio streaming | SBC, AAC, aptX (if CSR chip supports) | | AVRCP | Remote control (Play/Pause/Next) | v1.6 - Absolute Volume | | HFP/HSP | Hands-free calling | v1.7 - Wideband speech | | HID | Keyboard, Mouse, Gamepad | Full | | GATT | BLE device communication | v4.0+ | | OBEX | File transfer | Push, FTP, Sync | | PAN | Bluetooth tethering (NAP, GN) | Yes | | SPP | Serial port emulation (Legacy devices) | Yes | | HOGP | BLE Keyboard/Mouse | Yes |

Where to Safely Download the E-UB5 Bluetooth USB Dongle Driver

Do NOT use driver updater software – they often bundle adware. Safe sources:

  1. Microsoft Update Catalog (for .inf files)
  2. Realtek Official Site (for RTL8761B)
  3. CSR Support Archive (now owned by Qualcomm – look for ‘CSR8510 A10’ driver)
  4. LaptopVideo2Go – Driver section (user-uploaded, but community-verified)
  5. The CD/DVD included with your dongle – if you still have it.

Avoid: DriverGuide.com, DriverIdentifier, MyDriverDownloader – these often host outdated or malicious files.

Advanced Troubleshooting: E-UB5 Dongle Not Working After Driver Install

If you’ve installed the driver but Bluetooth is still unstable, try these fixes: