Yes, it works with Linux, KDE 4 and BlueZ. However, the device was not recognized by my Slackware 14.2 Linux. I had to edit the driver source file to add the device ID. I edited the file /usr/src/linux/drivers/bluetooth/btusb.cAfter these two lines /* Broadcom BCM20702A0 */ { USB_DEVICE(0x413c, 0x8197) },I added this line for the device ID of the Pluggable USB adapter. { USB_DEVICE(0x0a5c, 0x21e8) },The change might not be required for newer Linux kernels. Use this patch at your own risk!

Can multiple keyboards be paired with this adapter? Or do I have to purchase multiple adapters - 1 for each individual keyboard?

This adapter handles multiple devices, up to seven. When you say multiple keyboards, I'm presuming you mean different keyboards for different computers. Either way, to clarify, you need one adapter for each computer, which will then allow the computer to which it is connected handle up to seven devices. This device has worked perfectly for me. I've connected it to Bluetooth speakers, keyboards, headphones, and more.

Works with Raspberry pi?

MANUFACTURER ANSWER: Yes, but can vary with Linux distro. With latest version of Raspian, you should be fine. We have details here: http://plugable.com/2013/12/10/using-the-plugable-usb-bt4le-bluetooth-adapter-with-the-raspberry-pi Thanks for asking!

Can I use this to connect to these headphones? http://amzn.to/2ktLr6u

MANUFACTURER COMMENT: It should work. For the most part issues with audio devices are primarily isolated to Windows 7 and below, and Linux systems (usually additional packages need to be installed or the kernel needs to be updated). If you are using Windows 8 and above, the headphones should work well. Most audio devices still work without issue in Windows 7, mostly issues are with Bose devices and with devices that utilize Bluetooth Low Energy for a mobile companion app. If you are using an older version of Windows or if you are using Linux and there are problems, we can help. Please contact us at support@plugable.com if you encounter problems.

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🔌 Unlock wireless freedom—your PC’s Bluetooth upgrade, tiny but mighty!

PLUG PLAY SIMPLICITY - Quick setup with special drivers for full device support, including Bose QC35.
POCKET SIZED POWERHOUSE - Ultra-compact design stays plugged in on the go—no bulky dongles here.
TRUSTED LONGEVITY SUPPORT - Backed by 2-year warranty and lifetime North American customer care.
EFFORTLESS BLUETOOTH UPGRADE - Instantly add Bluetooth to any Windows PC without built-in support.
UNIVERSAL DEVICE COMPATIBILITY - Connect headphones, speakers, keyboards, mice, and more with ease.

The Plugable USB Bluetooth 4.0 Low Energy Micro Adapter is a sleek, ultra-compact USB dongle that adds Bluetooth connectivity to Windows PCs lacking built-in support. Compatible with Windows 7 through 11, it supports a wide range of wireless devices including headphones, speakers, and input peripherals. Designed for portability and ease of use, it comes with a 2-year warranty and lifetime customer support, making it the perfect upgrade for professionals seeking seamless wireless integration.

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Wireless Type	Bluetooth
Brand	Plugable
Item model number	USB-BT4LE
Hardware Platform	PC
Operating System	Mac,Windows 11,Windows 7
Item Weight	0.1 ounces
Product Dimensions	0.75 x 0.25 x 0.5 inches
Item Dimensions LxWxH	0.75 x 0.25 x 0.5 inches
Color	Black
Manufacturer	Plugable
ASIN	B009ZIILLI
Is Discontinued By Manufacturer	No
Date First Available	October 31, 2012

Plugable USB Bluetooth 4.0 Low Energy Micro Adapter (Compatible with Windows 11, 10, 8.x, 7, Classic Bluetooth, Gamepad, and Stereo Headset Compatible)

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