HP Laser 137FNW Mono All-in-One Wireless Printer with LCD Display, 128MB Memory, and 21ppm Speed

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Predominant colors of the product

Indicates whether the product has a feature that automatically reduces or adjusts certain parameters (such as power consumption, volume, or other settings) without user intervention. The value is typically "Yes" or "No", but some vendors may use synonyms like "Supported" to denote availability of the feature.

The highest percentage by which a device can enlarge or reduce the size of a document during copying, scanning, printing, or faxing. It indicates the maximum scaling factor relative to the original document size and is expressed as a value between 0 % and 100 %.

The pixel dimensions that a copier or multifunction printer can output, expressed as width by height (e.g., 600x300 dpi). It indicates the maximum resolution available for printing, copying, scanning, and faxing documents.

The maximum number of copies a printer can produce per minute when printing in black‑and‑white at normal quality on A4 paper. This value indicates the throughput capability for standard copy tasks and allows users to compare performance across models.

Indicates whether the device can perform copy functions and the type of copying it supports (e.g., colour or monochrome). The value is a free‑text label that describes the copying feature available on the product.

The total number of text lines that a device’s built‑in or external display can show at once. It indicates how many separate rows of characters are visible on the screen, which is useful for understanding readability and interface layout.

A list of file formats that the product can open, view or print, such as PDF, DOCX, TXT, XPS and other common office or text documents. Each value represents a distinct format supported by the device’s software or firmware.

A list of envelope sizes that a product can accept, expressed with standard codes or names (e.g., "DL", "C5", "10"), optionally combined in comma‑separated groups to indicate compatible envelopes.

The environmental conditions under which the product is designed to operate safely and reliably, expressed as a temperature range in degrees Celsius and a relative humidity range in percent. Values are typically formatted like "0 °C to 40 °C – 10 % to 90 %" or similar.

Specifies the type of wired Ethernet interface supported by a device, such as Gigabit Ethernet, 10 GbE, Fast Ethernet, or other variants. The value is a free‑text label that identifies the standard or generation of the Ethernet port(s) available on the product.

The amount of memory available for storing fax documents, expressed either as a number of pages or as a digital storage size (e.g., megabytes). It indicates how many faxes can be queued or archived before the device requires clearing or additional storage.

The maximum data transfer rate at which a fax machine can send or receive faxes, expressed in bits per second (e.g., kilobits per second). This value indicates how quickly the device can transmit fax pages and is useful for comparing throughput across models.

The highest count of telephone numbers that can be stored for quick dialing on a fax machine or multifunction device. This value indicates how many contacts the user can pre‑save for rapid access during fax operations.

Indicates the target market segment for a product, such as "Business", "Home", or "Small‑medium business". This attribute helps customers quickly identify the intended user group and typical use case of the item.

The maximum number of pages that a single black ink or toner cartridge can print before it needs to be replaced. This value helps users estimate how often they will need to refill or replace the cartridge and compare the longevity of different cartridges.

A list of the standard ISO B‑series paper dimensions that a device can accept, such as B0, B1, …, B5. Each value represents a distinct sheet size and allows users to verify compatibility with the documents they need to print or scan.

Represents the number of individual units, packages, or components that can be placed on a single pallet. This value indicates how many pieces are stored or shipped together on one pallet, helping users assess storage capacity and logistics planning.

The highest number of copies a printer can produce in a single print job or per page, expressed as an integer. It indicates the maximum output capacity for duplicate printing tasks and helps users compare throughput across models.

The maximum number of pages a printer, copier or fax machine is designed to handle in a typical month of operation. It indicates the expected workload capacity and helps users compare how heavily different models can be used before reaching their limits.

The maximum number of sheets or pages that a printer, copier, or fax machine can accept in a single feeding cycle. It indicates the largest input tray capacity and helps users understand how many pages can be processed automatically before needing to reload paper.

The total count of individual copies that a product can produce, print, or otherwise deliver in a single operation or session. It represents the maximum number of identical units that the device is capable of handling at once, such as the number of pages a printer can copy before needing to pause or reload. The value is an integer and may be accompanied by the word "copies" for clarity.

The highest number of sheets a printer, copier or fax machine can process in a single operation cycle, such as printing, copying or scanning. This figure indicates the device’s throughput capability and helps users compare productivity across models.

The largest amount of memory that a device can support, expressed as a data size such as megabytes (MB) or gigabytes (GB). It indicates the upper limit for active processes and multitasking performance.

Indicates whether a printer can produce full‑colour output or is limited to monochrome (black‑and‑white) printing. Typical values are "Colour" for devices that support full colour and "Mono" for black‑only devices.

The type of network interface that a device uses to connect to other devices or networks, such as Ethernet, Wi‑Fi, or other wired or wireless standards. It indicates the physical connector and protocol supported by the product.

The total number of individual units contained within a single package or bundle. This value helps customers understand how many pieces they receive when purchasing the product, and it is useful for inventory, shipping, and comparison purposes.

A list of natural languages in which the page description of a product is available or supported, allowing users to view or interact with the content in their preferred language.

The type of paper input mechanism available in a printer or copier, such as a standard tray, cassette, sheet‑fed feeder, manual feed, or roll. It indicates how the device accepts and feeds paper for printing, scanning or copying.

The total count of input trays that a printer, copier, or multifunction device provides for automatically feeding paper. It indicates how many separate tray compartments the device has, helping users understand the maximum number of pages that can be loaded at once.

The mass of a sheet of paper expressed in a standard unit such as grams per square meter (gsm) or grams. It indicates how heavy the paper is and can be used for selecting appropriate printers, estimating shipping costs, or comparing paper quality.

The pixel density of a printer’s output, expressed as dots per inch (dpi). It indicates how many individual printing points are used to render an image or text, affecting the sharpness and detail of printed documents.

A list of the Wi‑Fi standards that a device can connect to, such as IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, Wi‑Fi 4 (802.11n), Wi‑Fi 5 (802.11ac) or Wi‑Fi 6 (802.11ax). The values are typically separated by commas and may include both the technical name and a consumer‑friendly label.

A list of operating systems that the server product can run or support, including specific versions and architectures when relevant. Each value represents a distinct OS compatible with the hardware.

The duration from the moment a web request is made until the first black page is rendered on the screen, expressed in seconds or other standard time units. It indicates how quickly a user sees any visual content and helps assess initial page performance.

The alternating current voltage range that the product accepts from its power source, expressed in volts (V), together with the acceptable mains frequency range, expressed in hertz (Hz). It indicates the minimum and maximum supply voltages and frequencies compatible with the device.

The time required for a device or component to reach its operating temperature or readiness after being powered on. It is expressed in standard time units such as seconds, minutes, or hours and indicates how long the user must wait before using the product at full performance.