...
The Services Catalog lists any type of Service that the User's organization could provide to customers or other Users. If a User deems a specific type of Service necessary to fulfill an item from the Service Desk, the User can order the appropriate Service from the Services Catalog.
The Equipment Catalog lists any type of Equipment that a User could order for any purpose – be it the fulfillment of an item from the Service Desk or the fulfillment of a User's personal Equipment needs. Remember, these Equipment types represent available Equipment Types, not actual Equipment in a Warehouse ready to fill an order.
...