# kIOPropertyProductSerialNumberKey ``` #define kIOPropertyProductSerialNumberKey ``` ## Discussion This key is used to indicate the card serial number ID. Requirement: Mandatory Example: ```objc Card Characteristics Product Name SD32G Product Revision Level 1.0 Card Type SDHC Serial Number 0045ff ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)