D-Link DSL-2740B ADSL2+ Modem

Identifiers
MPN	D-Link DSL-321B
Dimensions / Weight
Key Features
Certification A list of official certifications or compliance marks that the product has received from regulatory bodies, safety organizations, or industry standards groups. Each entry represents a distinct certification such as CE, FCC, RoHS, UL, or WEEE, and may include additional details like version numbers or specific test reports.	CE FCC Class B CE TBR-21 FCC Part 68 A-Tick CSA International RoHS
Data link protocols A comma‑separated list of network communication protocols that a device can use or support at the data link layer, such as Ethernet variants (Fast, Gigabit), Fibre Channel, and other link‑level standards. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.	ADSL/ADSL2/ADSL2+
I/O ports A list of the types of physical or virtual ports that are present on a product, such as USB, HDMI, Ethernet, audio jacks, DisplayPort, and wireless interfaces. Each entry represents a distinct port type that can be used for connectivity, power delivery, or other functions.	RJ-45 10/100BASE-TX Ethernet LANRJ-11 ADSL
Internal Indicates whether the product is designed to be installed inside a computer system or other device, such as an internal hard drive, SSD, network card, or component. A value of "Yes" means it can be mounted within the chassis; a value of "No" indicates it is intended for external use.	No
Modem Speed The maximum data transfer rate that a modem can achieve, expressed in kilobits per second (Kbit/s) or other common abbreviations such as Kbps. This value represents the theoretical peak throughput of the device under optimal conditions and allows users to compare the speed capabilities of different modems.	24000 Kbit/s
Operating relative humidity 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.	5 - 95 %
Operating temperature 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.	0 - 40 °C
Package depth The linear measurement from front to back or top to bottom of a product’s packaging, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the packaged item is and can be used for fitting, compatibility, or spatial planning.	205 mm
Package Height The vertical dimension of a product’s packaging measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and helps customers assess how tall the package will be when stored or shipped.	68 mm
Package width The horizontal measurement of a product’s packaging, expressed in a linear unit such as millimetres or inches. It indicates how wide the package is from one side to the other and helps customers assess fit for storage, shipping, or display.	151 mm
Pallet length The linear dimension of a pallet measured in a standard unit such as meters, centimeters or inches. It represents the overall length from one end to the other and is used to compare the size of pallets across different products and logistics contexts.	110 cm
Pallet width The horizontal measurement of a pallet, expressed in a linear unit such as millimetres or inches. It indicates how wide the pallet is from one side to the other and helps customers assess fit for storage, shipping, or display.	120 cm
Quantity per shipping (inner) case The count of individual units that are packaged together inside a single inner shipping case for transport or sale. It indicates how many separate pieces are included in each case, regardless of product type.	30 pc(s)
Shipping (inner) case gross weight	15.5 kg
Shipping (inner) case height The vertical dimension of the inner case or packaging measured from its lowest to highest point, expressed in a physical unit such as millimetres, centimetres or inches. It applies to any product where the internal dimensions of the shipping or protective case are relevant.	43.5 cm
Shipping (inner) case length The linear dimension of the inner case or enclosure of a product, measured in a standard unit such as meters, centimeters or inches. It represents the overall length of the internal space available for components or accessories and is useful for comparing sizes across similar items.	47.5 cm
Shipping (inner) case net weight	14.2 kg
Shipping (inner) case width The horizontal dimension of a product’s inner case or enclosure, measured in a linear unit such as millimetres or inches. It indicates how wide the interior space is from one side to the other and is used for sizing, fitting, and compatibility purposes with components that must fit inside the case.	36.2 cm
Storage temperature 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.	-20 - 70 °C

D-Link is a Taiwanese networking equipment manufacturer that produces a wide range of products for the consumer, small business, and enterprise markets. Some of their most popular products include wireless routers, switches, and network attached storage devices. D-Link has a strong reputation for quality and reliability, and their products are often praised for their feature-richness and ease of use.