WHAT IS A NETWORK INTERFACE CARD?
A Network Interface Card (NIC), also referred to as an Ethernet Card or Network Adapter, is a piece of hardware that connects a computer, laptop, or server to a network through an ethernet cable. It is crucial for enabling communication and data sharing between various devices, resulting in an improved IT system.
A Network Interface Card is installed directly into the main circuit board of a computer, either near the USB connectors on the back (for a built-in NIC) or on the back of the computer (for an external network card that plugs into a PCIe port). This positioning makes it easy to plug in an ethernet cable to connect to a router or network switch. When deciding on a NIC, one can choose from options that have a different number of ports, single, dual, or quad, depending on the number of connections needed in a computer network.
Additionally, Network Interface Cards (NICs) can also be integrated into the motherboard or use internal slots that reserve PCIe ports for future upgrades. These internal slots are called FLR or FLB (Flexible LOM Rack or Flexible LOM Blade) in HPE servers. Dell has its own ports for NICs, known as NDC (Network Daughter Card).
WHAT IS THE FUNCTION OF A NETWORK INTERFACE CARD?
An ethernet cable can be plugged into a network switch to connect the computer to other devices within the network, such as other computers, servers, printers, security cameras, etc. Additionally, the cable can be plugged into a router to connect the computer to the internet.
Network Interface Cards have different speed capabilities, ranging from 1GBe to 40GBe. To have a faster network, it is necessary to have a NIC that can support the speed of the switch, as well as a cable that can transfer data at the same speed.
A NIC is frequently confused with a broadband card or internet card, which enables a computer to connect directly and wirelessly to a network, like an internet. However, a network interface card allows a device to connect to a router or network switch through a wired connection.
WHAT IS A WIRELESS NETWORK INTERFACE CARD?
A wireless NIC, also known as a wireless network interface controller (WNIC), connects to wireless networks such as Bluetooth or Wi-Fi by using an antenna to transmit and receive data via radio waves. WNICs operate using layers 1 and 2 of the OSI networking reference model.
Many PCs and laptops have a built-in WNIC on the motherboard, allowing wireless communication between the device and various networks. This enables the computer to connect to the internet and other devices wirelessly through Bluetooth.
DO I NEED A NETWORK INTERFACE CARD?
When building custom servers or computers, a network card is a crucial component as it allows for communication with other devices within the network. The wired connection provided by a NIC is often faster, more efficient, and more secure than wireless communication, making it a popular choice in both professional and personal settings.
REF GROUP’S REFURBISHED NETWORK INTERFACE CARDS
REF Group offers a wide variety of network interface cards to fit any device or requirement. Our refurbished components come with a comprehensive three-year warranty and our experts are on hand to provide guidance and recommendations to ensure you get the right component for your needs. Browse our selection of network interface cards or contact us for expert advice.