2A24J-QCCDONGLELossless Bluetooth Tx

Questyle Lossless Bluetooth Tx Specification and Operation instruction Questyle | 2024.8 www.questyle.com In this complex world, we pursue simplicity. At Questyle, an integral part of our mission is to provide the simplest way for all cell phone users to enjoy lossless audio from streaming platforms, anytime and anywhere. In order to meet our customers’ growing demand for utmost audio quality, we are now launching our newest lossless bluetooth transmitter “QCC Dongle” QCC Dongle is an MFi certified and Lossless bluetooth audio transmitter, supporting full-duplex voice calls, 20m enhanced signal transmission, driving-free power automatic pairing and backconnection, automatic matching of audio priority codec protocol, using the new Qualcomm QCC3086 Bluetooth V5.4 chip, supporting the full range of APTX protocols, to achieve high quality music transmission. Questyle QCC Dongle, as an audio transmission enhancement device designed for lossless and low-delay music playback, aims to transmit lossless music from audio devices such as mobile phones to Bluetooth speakers or headphones with the highest quality and lossless by optimizing audio transmission paths and codecs. Questyle QCC Dongle -Lossless Bluetooth Tx Questyel QCC Dongle (Lossless Bluetooth Tx) Technical Specification QCC Dongle Feature List FeatureCategorySpecification/Requirements Main SOC Chip typeQCC-3086-0-WLNSP99-TR-05-0 Bluetooth VersionBluetooth v5.4 ；Compatible with Bluetooth 5.2/4.2/4.2 LE/4.0/2.1+EDR Power SupplyPower supply by USB (Power supply range：3.7V - 5V) Bluetooth BT codec /ProfileSBC；LC3；aptX Classic；atpX HD； aptX Adaptive；A2DP/HSP/AVRCP/SPP Audio codec Priority aptX Adaptive > aptX HD > aptX Classic> SBC Call modeFull duplex mode, support wechat, game call (uplink Sink should support microphone) Max. RF power class1 Transmission distance 20m（without occlusion） USB USB Type-C OTGFull Speed USB2.0 free drive X 1 USB compability iOS、Android、HarmonyOS、macOS 、Windows HIDMFi CP3.0 authentication DFUSupport Firmware upgrade via USB System power consumption Power Supply Current Normal working ＜100mA. At the beginning of startup, the working current is less than 30mA before shaking hands with Apple device CP3.0 communication Interaction & display LED X 3White X 1 、Red X 1 、Blue X 1 User Interaction 1、The unit automatically enters the pairing state after power-on initialization (LED lights flashing red and blue alternately). If the unit is paired before, it will be automatically re-connect to the last bluetooth device within 20 seconds. After 20 seconds if the unit do not reconnect to any BT device, it will automatically enter the pairing mode to connect to a new device. 2、When paried succesfully, LED will show the current audio codec protocol (the same protocol should be enabled for the sink devices) SBC Constant red； APTX adaptive Constant blue； APTX HD & Classic Constant white Priority: adaptive >HD >APTX> SBC Questyle QCC Dongle Product Picture USB Audio input plug (Type-C port) LED indicator Questyle QCC Dongle Audio Input and output connection USB Audio input QCC Dongle with USB Type-C Plug Bluetooth Transmission For PC/Tabets, it can use a Type-A to Type-C adapter BT Tx BT Rx Smartphone / Tablet / PC Bluetooth Earphone / Headphone /Speakers Questyle QCC Dongle Operation Instruction 1. Power On / Power Off - Insert the QCC dongle USB Type-C Plug into a USB audio device such as a mobile phone /Tablet/PC, and the QCC dongle will be powered on automatically by power supply through the USB port. The LED lights up and displays the corresponding status. - Unplug the QCC Dongle to power off and turn off, the LED lights off. 2. Blueooth Pairing and Connect - When the QCC Dongle is powered on(by plugging in a computer/mobile phone /iPad) for the first time after out of box, the Dongle will automatically enter the Bluetooth pairing mode, and the LED on the Dongle will flash red and blue alternately. - At this time, set the Bluetooth SINK device (Bluetooth earphone or speakers) into the pairing state. - The Dongle(Tx) and the SINK device(Rx) are automatically paired and connected. At this time, the LED on the Dongle enters the state of constant light (red/blue/white according to audio codec) as below. The LED color indicates the current Audio Codec： APTX Adaptive <---------> Constant blue Aptx HD & Classic <---------> Constant white SBC <---------> Constant red （Note: The connected Bluetooth SINK devices should support the corresponding Audio Decodec, priority: Aptx Adaptive > Aptx HD > Aptx classic > SBC ） Questyle QCC Dongle Operation Instruction 3. Bluetooth Reconnect Power on re-connection:： - After the QCC Dongle is powered on again (through plug into USB audio devices), it will automatically try to re-connect to the last Paired device (Paired device list =2) within 20 seconds. When the Dongle fails to re-connect to the last paired device within 10 seconds, it will try to connect back to the second last paired device again within another 10s. - If the QCC Dongle fails to reconnect to both two devices, it will switch to pairing mode and maintain the pairing mode for 20s before pairing a new device. If no device is paired and connected, the Dongle enters idle mode。 Out of Range re-connection： - If the distance between the QCC Dongle and the SINK device (eg Bluetooth earphone or speakers) is beyond the Bluetooth range(20m), it will disconnect and try to reconnect for 3 minutes. If Source and Sink devices return to the Bluetooth range within 3 minutes, the reconnection will be successful; If the connection fails within 3 minutes, the QCC Dongle will enter idle mode. - At this time, user can power off and power on to enter reconnect mode again. Packing and Accessories QTYRemark? QCC Dongle Unit1MFi Certified Warranty Card1 User Manual1 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmfu l interference, and (2) this device must accept any …

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Questyle Audio Technology Co., Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2024-08-30 FCC ID: 2A24J-QCCDONGLE Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Questyle Audio Technology Co., Ltd certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Questyle Audio Technology Co., Ltd certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Applicant: Questyle Audio Technology Co., Ltd Address: Room No.13A, Floor 13, Yunsong Building, The 8th Tairan Road, Futian District, Shenzhen, China 518000 Tel.: +86 755 23915101 Email: [email protected] Sincerely, Signature:

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:HOPEKCORPORATIONINC Address:4358SBANNOCKSTENGLEWOOD,CO80110UnitedStates FRN:0034562900 ContactName:PeterDavis TelephoneNo:561-235-6113 E-mail:[email protected] ThisletteristoconfirmthattheUSAgentforServiceofProcessacceptsresponsibilitytoactas alocalrepresentativeonbehalfofQuestyleAudioTechnologyCo.,Ltd TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. Applicant: CompanyName:QuestyleAudioTechnologyCo.,Ltd ProductDescription:LosslessBluetoothTx FRN:0031330483 GranteeCode:2A24J FCCID:2A24J-QCCDONGLE ContactName:JasonWang Address:RoomNo.13A,Floor13,YunsongBuilding,The8thTairanRoad,FutianDistrict, Shenzhen,China518000 TelephoneNo:+8675523915101 E-mail:[email protected] TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. ThisAgreementisvaliduntil(Permanentlyvalid). Date:2024/08/30 Applicant’sName:JasonWangUSAgentforServiceofProcess’sName: Title:CEOTitle:Manager SignatureSignature

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Questyle Audio Technology Co., Ltd Date：Aug. 30, 2024 Product Model Number: Lossless Bluetooth Tx FCC ID: 2A24J-QCCDONGLE To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:  Testing  Approval applications and procedures We declare that QAI LABORATORIES LTD. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI LABORATORIES LTD. on our behalf shall have the same effect as acts of our own. By: Contact Listed on FCC Wesbite Title: CEO Email: [email protected] Telephone: +86 755 23915101 On behalf of: Questyle Audio Technology Co., Ltd

Questyle Audio Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 30, 2024 Subject; Request for Confidentiality FCC ID: 2A24J-QCCDONGLE To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jason Wang Title: CEO

2.4GHz2012ChipAntenna:ANT2012R2400A1L0 1/5 Applications: WLAN,802.11b/g,Bluetooth,etc... Features SMD,highreliability,ultracompact,Omni-directional... Partnumber ElectricalSpecification WorkingFrequencyRange2400~2484MHz PeakGain1.01dBi(Typ.) Impedance50Ohm VSWR2.5(Max) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration ANT2012R2400A1L0 (1)(2)(3)(4)(5)(6) (1)ProductcodeChipAntenna (2)SizeCode2.0x1.2mm (3)PackingTapeandreel (4)Frequency2.4GHz (5)SeriesA1 (6)TypeL0 Dimension(mm)No.TerminalName L2.00±0.151Feeding W1.20±0.152GND T0.50±0.10 D10.30±0.15 D20.60±0.15 2.4GHz2012ChipAntenna:ANT2012R2400A1L0 2/5 EvaluationBoardReference PCBDimension AntennaLayoutReference Unit:mm :ChipAntenna :LandPattern 2.4GHz2012ChipAntenna:ANT2012R2400A1L0 3/5 ElectricalCharacteristics VSWR&Efficiency RadiationPattern XZplaneXYplaneYZplane 2.4GHz2012ChipAntenna:ANT2012R2400A1L0 4/5 TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEAψBψCψDWψM 20127”5K/Reel2.0±0.513.5±1.021±1.060±1.011.5±2.0178±2.0 TappingSpecification PackagingTypeABWEFGHT ψ DP PaperType20121.50 ± 0.202.20 ± 0.208.0 ± 0.201.75 ± 0.103.5 ± 0.054.0 ± 0.102.0 ± 0.050.80 ± 0.101.50 ± 0.104.0 ± 0.1 RecommendedReflowProfile 2.4GHz2012 Chip Antenna:ANT2012R2400A1L0 5/5 Pb free solder SoakingWorkingSolderingPeak Temp.TimeTemp.TimeTemp.TimeTemp. T1T2t1T3t2T4t3T5 150 °C 180 °C 60 to 120sec230 °Cmore than 30sec247 to 253 °C within 10sec260 °C Max. APR 20 23 Ver.01 Manufacturer: Questyle Audio Technology Co., Ltd Address: Room No.13A, Floor 13, Yunsong Building, The 8th Tairan Road, Futian District, Shenzhen, China 518000

Ext Photos Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6

2.26mm 2.74mm 2.60mm 1.19mm 20.00mm 15.25mm 25.20mm front interface surface Logo surface opposite

Int Photo Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 ANT

- Page 1 of 9 - Report No.: HB20240816006E-03 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com RF EXPOSURE Test Report Product: Lossless Bluetooth Tx Trade Mark: Questyle Model Number: QCC Dongle FCC ID: 2A24J-QCCDONGLE Prepared for Questyle Audio Technology Co., Ltd Room No.13A, Floor 13, Yunsong Building, The 8th Tairan Road, Futian District, Shenzhen, China 518000 Prepared by Shenzhen HongBiao Certification& Testing Co., Ltd Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen, China Tel.: +86-755-2998 9321 Fax.: +86-755-2998 5110 Website: http://www.sz-hongbiao.com - Page 2 of 9 - Report No.: HB20240816006E-03 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com Table of Contents 1 GENERAL DESCRIPTION ................................................................................................................................... 5 1.1 DESCRIPTION OF EUT ................................................................................................................................................ 5 1.2 TEST MODE .............................................................................................................................................................. 5 1.3 TEST SETUP .............................................................................................................................................................. 5 1.4 ANCILLARY EQUIPMENT .............................................................................................................................................. 5 2 TEST FACILITIES AND ACCREDITATIONS ............................................................................................................ 6 2.1 TEST LABORATORY ..................................................................................................................................................... 6 2.2 ENVIRONMENTAL CONDITIONS ..................................................................................................................................... 6 2.3 MEASUREMENT UNCERTAINTY ..................................................................................................................................... 6 2.4 TEST SOFTWARE ........................................................................................................................................................ 6 3 LIST OF TEST EQUIPMENT ................................................................................................................................ 7 4 RF EXPOSURE .................................................................................................................................................. 8 4.1 STANDALONE SAR TEST EXCLUSION CONSIDERATIONS........................................................................................................ 8 4.1.1. Limit ............................................................................................................................................................ 8 4.1.2. Test Procedures ........................................................................................................................................... 8 4.1.3. Test Result ................................................................................................................................................... 9 - Page 3 of 9 - Report No.: HB20240816006E-03 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com TEST RESULT CERTIFICATION Applicant’s Name ................. : Questyle Audio Technology Co., Ltd Address ................................. : Room No.13A, Floor 13, Yunsong Building, The 8th Tairan Road, Futian District, Shenzhen, China 518000 Manufacturer's Name .......... : Questyle Audio Technology Co., Ltd Address ................................. : Room No.13A, Floor 13, Yunsong Building, The 8th Tairan Road, Futian District, Shenzhen, China 518000 Product description Product name ........................ : Lossless Bluetooth Tx Model Number ....................... : QCC Dongle Standards ............................. : FCC CFR 47 PART 1 , 1.1310 Test procedure ....................... : KDB 447498 D01 General RF Exposure Guidance v06 This device described above has been tested by Shenzhen HongBiao Certification& Testing Co., Ltd and the test results show that the equipment under test (EUT) is in compliance with the EMC requirements. And it is applicable only to the tested sample identified in the report. Date of Test ............................................ : Date (s) of performance of tests ............. : Aug. 17, 2024~Aug. 28, 2024 Test Result ............................................... : Pass Testing Engineer : (Zoe Su) Technical Manager : ( G a r y Lu) Authorized Signatory : (L e o S u) - Page 4 of 9 - Report No.: HB20240816006E-03 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com Revision History Revised No. Date of Issue Description 01 Aug. 30, 2024 Original - Page 5 of 9 - Report No.: HB20240816006E-03 Add:Room 102, 201, Building 2, Yuanwanggu RFID Industrial Park, Tongguan Road, Tianliao Community, Yutang Street, Guangming District, Shenzhen,China Tel: (86-755) 29989321 Fax: (86-755) 29985110 Web:www.sz-hongbiao.com 1 General Description 1.1 Descriptio…

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- Page 1 of 1 - Test Setup Photos Radiated Emission Below 1GHz Radiated Emission Above 1GHz