Why We Sleep: Unlocking the Power of Sleep and Dreams

The model or designation of the security chip that is integrated into a device. This attribute identifies the specific hardware component responsible for secure boot, encryption, and authentication functions.

The maximum number of sheets a printer or paper feeder can hold at one time, expressed as an integer followed by the unit "sheets" (e.g., 500 sheets). This attribute helps users understand how much paper the device can accommodate before needing to be refilled.

The total amount or count of a specific item, component, or unit associated with the product. It represents a simple integer value that can be used to indicate how many pieces, units, or occurrences are included, available, or required for the product. This attribute is generic and applies to any context where a numeric quantity is relevant, such as the number of items in a bundle, the count of consumables, or the amount of material supplied.

The calendar year in which a product was first made available to the public or released for sale. It is expressed as a four‑digit number (e.g., 2023) and can be used to filter, sort, or compare products by their release period.

The general category or style of the product, such as laptop, printer cartridge, or cooling fan. It helps buyers quickly identify the nature of the item and compare similar products.

Indicates whether the product supports wireless networking and, if so, which Wi‑Fi standards are available (e.g., 802.11b/g/n/ac/ax). The value is a free‑text description of the supported protocols and any additional features such as dual‑band or hotspot mode.