Cisco ISR891F-K9 Integrated Services Router

The range of alternating current voltage that the product accepts from its power source, expressed in volts (V). It indicates the minimum and maximum supply voltages compatible with the device across different regions.

Indicates whether the product supports an Access Control List (ACL) feature, allowing administrators to define rules that permit or deny network traffic based on criteria such as IP address, port number, or protocol.

The classification of an antenna used in a device, indicating its physical configuration or mounting style such as external, internal, integrated, directional, omnidirectional, or multi‑antenna setups (e.g., "2x2", "4 x External"). It helps buyers understand how the antenna is attached and what signal coverage it may provide.

The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.

Represents how many combo SFP (Small Form-factor Pluggable) ports are physically present on the product. The value is a simple integer indicating the total count of these ports, regardless of speed or interface variant.

A list of the Ethernet standards that a product supports, such as Fast Ethernet (10/100 Mbps), Gigabit Ethernet (1 Gbps), 2.5 GbE, 10 GbE, and other variants. Each value is a free‑text label describing one supported interface; multiple values are separated by commas when the device offers more than one speed or generation.

Represents the total count of Ethernet LAN (RJ‑45) interfaces available on a product. The value is an integer indicating how many physical Ethernet ports are present, regardless of speed or generation.

The total amount of internal flash memory available in a device, expressed as a data size (e.g., megabytes or gigabytes). This attribute indicates how much data can be stored on the device’s built‑in flash storage and is useful for comparing storage capacity across products.

Indicates whether the product includes a modem that is installed inside the device, such as an integrated cellular or Wi‑Fi module. A value of "Yes" means the modem is built into the chassis; "No" indicates it requires an external accessory.

A list of network protocols that a device can use for configuration, monitoring and remote management, such as SNMP, HTTP/HTTPS, Telnet, SSH or other standard interfaces. Each protocol is represented by its common name and may be separated by commas or slashes in the source data.

The altitude interval (in meters) at which a product or component ceases to function correctly due to environmental factors such as reduced atmospheric pressure, temperature changes, or other elevation‑related effects. The value is expressed as a minimum–maximum range and applies to any device that has documented limits for operation above or below certain heights.

The total number of individual users that can be supported or accessed by the product or service. It represents a count of distinct user accounts, connections, or licenses and is expressed as an integer value.

The range of altitudes (in meters) at which a product or component can operate reliably without performance degradation due to changes in atmospheric pressure, temperature, or other altitude‑related effects.

The range of relative humidity (in percentage) within which the product is designed to operate reliably. Values are expressed as a minimum–maximum interval such as "20 - 80 %" and indicate the acceptable environmental moisture level for optimal performance.

The range of temperatures in which a product can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

The main electrical supply that powers the device, such as mains electricity (AC), battery, USB power, PoE, or a combination of these options.

A list of routing protocols that a device can use to forward network traffic, such as OSPF, RIP, BGP, EIGRP, IS‑IS, and VRRP. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.

A list of cryptographic and authentication methods that a device can use for secure communication or data protection. Each entry represents a distinct algorithm or protocol, such as encryption ciphers (e.g., AES, WEP), authentication mechanisms (e.g., RADIUS, WPA‑PSK), or network security protocols (e.g., HTTPS, SSL/TLS). The values are typically separated by commas and may include both technical identifiers and consumer‑friendly labels.

The range of relative humidity (expressed as a percentage) within which the storage device is designed to operate reliably. Values are given as a minimum–maximum interval such as "10 - 90 %" and indicate the acceptable environmental moisture level for optimal performance.

The range of temperatures in which a device can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

A list of network communication protocols that a device can use or support, such as TCP/IP, HTTP, HTTPS, FTP, DHCP, DNS, and various wireless standards. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.

The specific version of the USB standard that a product supports, expressed as a generation number and optional descriptive suffix (e.g., "3.2 Gen 1" or simply "3.0"). This attribute indicates the data‑transfer capabilities and compatibility with USB devices.