--- product_id: 75889363 title: "Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden)" brand: "cables kart" price: "£0.27" currency: GBP in_stock: false reviews_count: 8 url: https://www.desertcart.co.uk/products/75889363-ultra-mini-bluetooth-csr-4-0-usb-dongle-adapter-black store_origin: GB region: Great Britain --- # Compact size, 33ft wireless range Bluetooth 4.0 with 3 Mbps speed Gold-plated USB connector Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) **Brand:** cables kart **Price:** £0.27 **Availability:** ❌ Out of Stock ## Summary > 🚀 Elevate your workspace with wireless freedom—small dongle, big impact! ## Quick Answers - **What is this?** Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) by cables kart - **How much does it cost?** £0.27 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/75889363-ultra-mini-bluetooth-csr-4-0-usb-dongle-adapter-black) ## Best For - cables kart enthusiasts ## Why This Product - Trusted cables kart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Reliable Build:** Gold-plated connector ensures stable, corrosion-free connections for long-lasting performance. - • **Enhanced Audio Experience:** Enjoy crystal-clear stereo sound with A2DP support—perfect for calls, music, and meetings on the move. - • **Broad Compatibility Spectrum:** Works flawlessly across Windows 10 to XP and syncs with all your Bluetooth devices from headsets to keyboards. - • **Ultra-Compact & Travel-Ready:** Tiny footprint fits discreetly in your laptop USB port—leave it in and go, no bulk, no hassle. - • **Seamless Wireless Connectivity:** Cut the cords and connect effortlessly with Bluetooth 4.0 tech supporting up to 3 Mbps data transfer. ## Overview The Ultra-Mini Bluetooth CSR 4.0 USB Dongle is a sleek, gold-plated adapter that delivers fast 3 Mbps Bluetooth 4.0 connectivity with backward compatibility to legacy devices. It supports Windows 10 through XP, offers up to 33ft wireless range, and enhances audio streaming with A2DP stereo support. Its ultra-compact design makes it perfect for professionals on the go who demand reliable, cable-free connections for headsets, speakers, keyboards, and more. ## Description Important Note : When you connect headset or speaker,feel the sound like handsfree, please You have to Uncheck "Handsfree telephony" from the services setting on your bluetooth device -> Control Panel/Hardware and Sound/Devices and Printers -> select your device, open Properties, then go to Services tab and uncheck Handsfree Telephony. Marked as your default device in Control Panel -> Hardware and sound -> Change system sound -> Playback -> select bluetooth device and select set defaults. CSR V4.0 Dongle : Support Bluetooth voice and date transmission Ultra-compact, easy carrying and space saving. Experience stereo audio with Advanced Audio Distribution Profile (A2DP) support. Bluetooth Low Energy (BLE) protocol support. Up to 3 Mbps data transfer rate with Enhanced Data Rate (EDR) support. Backward support classic Bluetooth V3.0/2.1/2.0/1.1 Bluetooth version: 4.0 with EDR - data transfer rate up to 3Mbps ISM Band: 2.402-2.480GHz Support Profile: Serial Port, Object Push, File Transfer, LAN Access, Personal Area Network, Audio Gateway Compatibility : Windows 10, Windows 8, Windows 7, XP, Vista ,2003, 2000,Me, Bluetooth-enabled devices, like iPhone, iPad, iPod,Samsung Galaxy,note ,smart phones, tablets, keyboards, mice, speakers, printers, projectors,headsets & more ## Features - This adapter creates cable-free connections between PCs and other Bluetooth devices such as Bluetooth enabled headsets, speakers, cell phones, keyboard or mouse and more (with Microsoft built-in drivers) at speeds of up to 3 Mbps - Bluetooth 4.0 technology. Backwards compatible with Legacy Bluetooth Equipment Bluetooth 3.0, 2.1, 2.0 and 1.0 Equipment,Improves Bluetooth support for Windows 10,8.1/8,7,Vista, XP,2003, 2000,Me, 32 bit and 64 bit - Supports Bluetooth stereo headsets and more with built-in Windows 10 and 8 drivers or using the included drivers for Windows 7 and earlier. Specifically works with Microsoft's new Bluetooth 4.0 Low Energy support in Windows 8 and later. Does not add Bluetooth Low Energy. - Extremely compact USB adapter. Supports A2DP stereo playback, Safe to leave in for laptop travel Newest Bluetooth class 2 Smart Ready specification with v 4.0 low energy - Up to 33ft/10m, wireless data exchange, audio Music Stream Enhanced Data Rata (EDR) compliant for both 2 Mbps and 3 Mbps modulation modes with gold plated connector. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Cables Kart | | Manufacturer | Cables Kart & trade | | Colour | Black | | Package Dimensions | 10.9 x 9.1 x 1.4 cm; 20 g | | Item model number | Bluetooth CSR 4.0 USB Dongle | | Operating System | 8 . 1,Vista,Windows 10,Windows 7 | | Are Batteries Included | No | | Included Components | 1 X usb dongle, 1 X driver cd | | Manufacturer | Cables Kart & trade | | Item Weight | 20 g | ## Images ![Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) - Image 1](https://m.media-amazon.com/images/I/61aZTJVKRJL.jpg) ![Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) - Image 2](https://m.media-amazon.com/images/I/5154IqzPHML.jpg) ![Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) - Image 3](https://m.media-amazon.com/images/I/51UB9MWGnxL.jpg) ![Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) - Image 4](https://m.media-amazon.com/images/I/61Q+G6rQO9L.jpg) ![Ultra-Mini Bluetooth CSR 4.0 USB Dongle Adapter(Black:Golden) - Image 5](https://m.media-amazon.com/images/I/41NVCf5ianL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product, easy to use *by K***N on 4 March 2019* Serves the purpose...Was able to connect Videcon d2h remote via Smart remote app... Just plug into d2h box and open the smart remote app and scan for nearby Bluetooth device... ### ⭐ don"t waste your money *by S***A on 10 November 2019* i bought this item but i found that it is not working for me. it have a issue in connecting devices. my normal headphone can't connect with it if it connects sound signal is not flawlessly sent by this item. no refund option is available. overall advice don't buy this ### ⭐⭐⭐⭐ Value for money *by H***H on 8 June 2019* This is very good product as described "plug and play" I am very happy to know that it is also working with my car's JVC stereo system perfectly. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/75889363-ultra-mini-bluetooth-csr-4-0-usb-dongle-adapter-black](https://www.desertcart.co.uk/products/75889363-ultra-mini-bluetooth-csr-4-0-usb-dongle-adapter-black) --- *Product available on Desertcart Great Britain* *Store origin: GB* *Last updated: 2026-04-23*