1. FCC ID
  2. A5M
  3. A5MLB520NC

FCC ID A5MLB520NC

ThinkPad Dual-Mode Wireless ANC Foldable Headset 8550

by Lenovo (Beijing) Limited

Grantee Code: A5M   Product Code: LB520NC
Latest application date: 2026-01-30

FCC ID Device Details

FCC IDA5MLB520NC
Mirrorsfcc.id | gov | fccid.ai
Grantee CodeA5M
Product CodeLB520NC
Applicant BusinessLenovo (Beijing) Limited 🇨🇳
Related Domains lenovo.com
Equipment ClassThinkPad Dual-Mode Wireless ANC Foldable Headset 8550
Test FirmTUV Rheinland (Shenzhen) Co., Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzOriginal Equipment2026-01-30
2402-2480 MHzOriginal Equipment2026-01-30

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2026-07-27PDF 1.2 MB
User Manual_Safety Compliance InfoUsers Manual2026-07-27PDF 1.6 MB
Internal PhotosInternal Photos2026-07-27PDF 1.2 MB
External PhotosExternal Photos2026-07-27PDF 530.9 KB
Product Label and LocationID Label/Location Info2026-01-30PDF 1.8 MB
Test Setup PhotosTest Setup Photos2026-07-27PDF 415.9 KB
Test Setup Photos_SARTest Setup Photos2026-07-27PDF 640.6 KB
Antenna Gain InfoTest Report2026-01-30PDF 631.1 KB
SAR Test ReportRF Exposure Info2026-01-30PDF 1.2 MB
SAR Test Report_Appendix ARF Exposure Info2026-01-30PDF 226.5 KB
SAR Test Report_Appendix BRF Exposure Info2026-01-30PDF 454.9 KB
SAR Test Report_Appendix CRF Exposure Info2026-01-30PDF 1.9 MB
Test ReportTest Report2026-01-30PDF 654.2 KB
Test Report_Appendix A_BR&EDRTest Report2026-01-30PDF 3.4 MB
Test Report_Appendix B_BLETest Report2026-01-30PDF 3.3 MB
Test Report_Appendix C_2.4G SRDTest Report2026-01-30PDF 3.3 MB
Attestation of US AgentAttestation Statements2026-01-30PDF 133.9 KB
Not Covered Entity Applicant AttestationAttestation Statements2026-01-30PDF 55.2 KB
Not Covered Equipment AttestationAttestation Statements2026-01-30PDF 58.2 KB
Agency LetterCover Letter(s)2026-01-30PDF 104.9 KB
Confidentiality LetterCover Letter(s)2026-01-30PDF 80.4 KB
Block Diagram Metadata onlyBlock DiagramPDF 673.4 KB
Schematics Metadata onlySchematicsPDF 2.2 MB
Operational Description Metadata onlyOperational DescriptionPDF 244.8 KB

Application Information

Application IDQgk3z2dnOycdzJI4SUhgjA==
Final Action Date2026-01-30
Application PurposeOriginal Equipment
Applicant FRN0032905564
ModelLB520NC
Frequency Range2402-2480 MHz
Equipment ClassDTS - Digital Transmission System
Device DescriptionThinkPad Dual-Mode Wireless ANC Foldable Headset 8550
Responsible PartyYang Liu, liuyangs@lenovo.com , (86)10-58867473
Technical ContactLiu Yang, Lenovo (Beijing) Limited, liuyangs@lenovo.com , +86-10-58861975
Non-Technical ContactBrian Killebrew, Lenovo (United States) Incorporated, FCC@lenovo.com
Test FirmGina Yang, TUV Rheinland (Shenzhen) Co., Ltd., Gina.Yang@tuv.com , 8675582681497
TCB Emailtcb-hotline@tuv.com
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityYes
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceYes
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
Qgk3z2dnOycdzJI4SUhgjA==2026-01-30Original Equipment
CgkAaeCO98CF/8TLiBiu3g==2026-01-30Original Equipment

Equipment Authorization

FrequencyOutputRules
2402-2480 MHz0.016215C
2402-2480 MHz0.016715C

Grants

TCB Grant - Application Qgk3z2dnOycdzJI4SUhgjA==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  TUV Rheinland of North America, Inc.
1279 Quarry Lane Suite A
Pleasanton, CA 94566
Date of Grant: 01/30/2026

Application Dated: 01/30/2026
Lenovo (Beijing) Limited
201-H2-6, Floor2, Building 2,
No. 6 Shangdi West Road, Haidian District,
Beijing,
China
 
Attention: Yang Liu , Compliance Engineer

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  A5MLB520NC
Name of Grantee:  Lenovo (Beijing) Limited
Equipment Class: Digital Transmission System
Notes: ThinkPad Dual-Mode Wireless ANC Foldable Headset 8550
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0162  
15C 2402.0  -  2480.0 0.0167  

Power output listed is peak conducted. The highest reported SAR for head exposure conditions is 0.42 W/kg .

TCB Grant - Application CgkAaeCO98CF/8TLiBiu3g==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  TUV Rheinland of North America, Inc.
1279 Quarry Lane Suite A
Pleasanton, CA 94566
Date of Grant: 01/30/2026

Application Dated: 01/30/2026
Lenovo (Beijing) Limited
201-H2-6, Floor2, Building 2,
No. 6 Shangdi West Road, Haidian District,
Beijing,
China
 
Attention: Yang Liu , Compliance Engineer

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  A5MLB520NC
Name of Grantee:  Lenovo (Beijing) Limited
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: ThinkPad Dual-Mode Wireless ANC Foldable Headset 8550
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0162  

Power output listed is peak conducted. The highest reported SAR for head exposure conditions is 0.41 W/kg .