| Subject | English | Chinese Taiwan |
| comp., MS | add-on | 附加元件 (A device that is traditionally added to the base computer system to increase functionality, such as audio, networking, graphics, or SCSI controller) |
| comp., MS | add-on device | 附加裝置 (A device that is traditionally added to the base computer system to increase functionality, such as audio, networking, graphics, or SCSI controller) |
| comp., MS | add-on package | 附加元件封裝 (An XML file in the addons folder of the Datastore. Add-on packages are used to deploy files or an application to a device or emulator) |
| comp., MS | Mail Migration add-on | Mail Migration 增益集 (A tool that allows users to upload email messages, email folders, and contacts from an email account on their PC to the cloud to facilitate access from multiple devices) |
| comp., MS | Microsoft Online Services Sign-In Add-On | Microsoft Online Services 登入附加元件 (A required update for Microsoft Online Services that updates the Microsoft Online Services ID Sign-In Assistant to work with other Office programs) |