To perform hardware model normalization, you need to use the Hardware Model Normalization Content Service, which is a data service that provides standardized information about hardware models from various manufacturers. You can access this service from the Hardware Model Normalization module under Asset Management. To set the normalized display name for a hardware model, you need to use the following three fields from the hardware model record:
Name: This is the name of the hardware model as it appears in the model catalog or the CMDB. For example, "iPhone 12 Pro".
Manufacturer: This is the name of the manufacturer of the hardware model. For example, "Apple".
Model number: This is the unique identifier of the hardware model assigned by the manufacturer. For example, "A2341".
The normalized display name is a combination of these three fields, separated by commas. For example, "iPhone 12 Pro, Apple, A2341". The normalized display name helps you to easily identify and compare hardware models across different sources and platforms. Reference: Hardware Model Normalization, Demo - HAM Professional - Hardware Model Normalization, Work with hardware normalization, Hardware Asset Management - ServiceNow

Baseline ITSM Asset Management is the legacy application for managing assets, which has been replaced by the Hardware Asset Management application1. However, some of its features are still available and supported by ServiceNow2.
Mobile My Assets is a feature that allows users to view and request assets from the enterprise asset catalog using their mobile devices3. This feature is part of the baseline ITSM Asset Management application2.
Asset Inventory Audit is a feature that enables users to perform physical audits of assets in various locations using barcode scanners or RFID tags4. This feature is part of the baseline ITSM Asset Management application2.
Stockrooms are places to which assets are assigned and managed. Users can create and manage stockrooms and assign or transfer assets across stockrooms using the baseline ITSM Asset Management application.
The other options, such as Hardware Model Normalization, Hardware Asset Dashboard, Hardware Manufacturer Lifecycle Dates, and Mobile Asset Receiving, are not part of the baseline ITSM Asset Management application, but are part of the Hardware Asset Management application1 . References: 1: Hardware Asset Management - ServiceNow 2: Asset Management - Product Documentation: San Diego - ServiceNow 3: ServiceNow My Assets mobile app - Product Documentation: San Diego - ServiceNow 4: Audit your inventory - Product Documentation: San Diego
- ServiceNow : Stockrooms - Product Documentation: San Diego - ServiceNow : Hardware Asset Management overview - ServiceNow - Now Support

Classes are represented as tables in the ServiceNow database that define the attributes and relationships of a specific type of record1 The base asset class is the alm_asset table, which contains the common fields and properties for all types of assets, such as hardware, software, consumable, etc.2 The alm_asset table is extended by other asset classes, such as alm_hardware, alm_software, alm_consumable, etc., which add more specific fields and properties for each asset type2 The cmdb_asset table is not a class, but a view that joins the alm_asset table and the cmdb_ci table, which is the base configuration item (CI) class3 The cmdb_hardware table is a CI class, not an asset class, that contains the common fields and properties for all types of hardware CIs, such as computers, devices, network equipment, etc.4