{"product_id":"asus-usb-bt540-bluetooth-5-4-usb-adapter-up-to-7-devices","title":"ASUS USB-BT540 Bluetooth 5.4 USB Adapter - Up to 7 Devices","description":"\u003cp\u003eThe ASUS USB-BT540 Bluetooth 5.4 USB Adapter is a compact dongle designed for desktop and laptop users who want to add or upgrade Bluetooth connectivity without occupying much space. It supports simultaneous connections to up to 7 Bluetooth devices and includes the LC3 codec for more energy-efficient audio. The ultra-small form factor makes it easy to leave plugged in permanently or carry between machines.\u003c\/p\u003e\u003ch5\u003eWhy This Product\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 5.4 with Low Energy support\u003c\/strong\u003e — It uses the latest Bluetooth 5.4 standard, covering both classic Bluetooth (BDR\/EDR) and Bluetooth Low Energy (BLE) for broad device compatibility and reduced power draw.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect up to 7 devices at once\u003c\/strong\u003e — Up to 7 Bluetooth smart devices can be paired and active simultaneously, so keyboards, mice, headphones and more can all stay connected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC3 codec for efficient audio\u003c\/strong\u003e — The LC3 codec delivers a higher-quality audio experience while reducing device power consumption by approximately 50% compared to standard codecs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended BLE range up to 40 metres\u003c\/strong\u003e — In open space, BLE range reaches up to 40 metres, while classic Bluetooth covers up to 10 metres — a meaningful step up from older Bluetooth 4.x adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-small, travel-ready design\u003c\/strong\u003e — At 1.9 g and just 14.9 × 17.4 × 7.1 mm, it barely protrudes from a USB port and is easy to carry between machines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eAt a Glance\u003c\/h5\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eBluetooth 5.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eInterface\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUSB 2.0 Type-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMax Devices\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eClassic BT Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 10 m (open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBLE Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 40 m (open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eOS Support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eWindows 10\/11, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1.9 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch5\u003eCompatibility\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003e✓ Works with Windows 10 and Windows 11\u003c\/li\u003e\n\u003cli\u003e✓ Works with Linux\u003c\/li\u003e\n\u003cli\u003e✓ Connects via USB 2.0 Type-A — fits any full-size USB-A port\u003c\/li\u003e\n\u003cli\u003eNote: macOS is not listed in the supported operating systems; verify compatibility before purchase\u003c\/li\u003e\n\u003cli\u003eNote: BLE range of up to 40 metres and classic BT range of up to 10 metres are measured in open space; walls and interference will reduce these figures\u003c\/li\u003e\n\u003cli\u003e✗ Does not fit USB-C only ports without a separate adapter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eBest For \/ Trade-offs\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDesktop PC users\u003c\/b\u003e adding Bluetooth for the first time or upgrading from an older adapter to Bluetooth 5.4.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMulti-device users\u003c\/b\u003e who need up to 7 Bluetooth peripherals — keyboard, mouse, headset and more — connected at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWireless audio listeners\u003c\/b\u003e who want LC3 codec support for more efficient, higher-quality Bluetooth audio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrequent travellers\u003c\/b\u003e who need a near-invisible, 1.9 g adapter that can stay plugged in or slip into a pocket.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTrade-offs:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003emacOS users\u003c\/b\u003e — the adapter lists only Windows 10\/11 and Linux as supported operating systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-bandwidth data transfers\u003c\/b\u003e — maximum classic Bluetooth data rate is 3 Mbps, which is lower than Wi-Fi-based transfer solutions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUSB-C only machines\u003c\/b\u003e — the connector is USB 2.0 Type-A and will not fit without an additional adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLong-range classic Bluetooth applications\u003c\/b\u003e — classic BT range tops out at 10 metres in open space.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch5\u003eDescription\u003c\/h5\u003e\u003cp\u003eYour ultimate solution for wireless connectivity\u003c\/p\u003e\u003cp\u003eThe USB-BT540 features the latest Bluetooth 5.4 technology, allowing you to connect up to 7 Bluetooth smart devices simultaneously. Enjoy faster connections, connect more devices, and extend your range like never before!\u003c\/p\u003e\u003cp\u003eHigh quality, Unparalleled Efficiency\u003c\/p\u003e\u003cp\u003eThe USB-BT540 features LC3 codec, allowing listeners to enjoy a more energy-efficient and high-quality audio experience, while significantly reducing device power consumption by about 50%.\u003c\/p\u003e\u003cp\u003eFarther, faster!\u003c\/p\u003e\u003cp\u003eCompared to adapters using Bluetooth 4.X, the USB-BT540 significantly boosts data transfer speed and range.\u003c\/p\u003e\u003ch5\u003eSpecifications\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eGeneral\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eASUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUSB-BT540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eOS Support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eWindows 10\/11, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eConnectors\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUSB 2.0 Type-A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eBluetooth Standard\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eBluetooth 5.4, Bluetooth Classic (BDR\/EDR), Bluetooth Low Energy (BLE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eFrequency Band\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e2402–2480 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eSpectrum\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eFHSS (Frequency Hopping Spread Spectrum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eModulation\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eGFSK for 1M\/2 Mbps; π\/4-DQPSK for 2 Mbps; 8-DPSK for 3 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eData Rate (Classic BT)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 3 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eData Rate (BLE)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 2 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eRange (Classic BT)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 10 m (open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eRange (BLE)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eUp to 40 m (open space)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eMax Simultaneous Devices\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;margin-bottom:10px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e14.9 × 17.4 × 7.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003e1.9 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;font-weight:bold;width:35%;\"\u003ePackage Contents\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #ddd;\"\u003eBluetooth 5.4 USB Adapter, Quick Start Guide, Warranty Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"ASUS","offers":[{"title":"Default Title","offer_id":55690544775544,"sku":"ASU-4151","price":24.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/9119\/7218\/files\/pic_quality.jpg?v=1791312440","url":"https:\/\/tech-syndicate.co.uk\/products\/asus-usb-bt540-bluetooth-5-4-usb-adapter-up-to-7-devices","provider":"Tech Syndicate","version":"1.0","type":"link"}