5069-AENTR以太網(wǎng)通信適配器，也被稱為網(wǎng)絡(luò)適配器或網(wǎng)卡，是一種計(jì)算機(jī)硬件設(shè)備，用于連接計(jì)算機(jī)與以太網(wǎng)（一種廣泛使用的局域網(wǎng)技術(shù)）。它是計(jì)算機(jī)在局域網(wǎng)中通信所必需的接口設(shè)備。
具體來說，以太網(wǎng)通信適配器的主要功能包括：
數(shù)據(jù)轉(zhuǎn)換：將計(jì)算機(jī)內(nèi)部的數(shù)字信號轉(zhuǎn)換為可以在以太網(wǎng)上傳輸?shù)男盘?，以及將接收到的以太網(wǎng)信號轉(zhuǎn)換回計(jì)算機(jī)可以理解的數(shù)字信號。
物理連接：通過以太網(wǎng)電纜（通常是雙絞線或光纖）與以太網(wǎng)交換機(jī)、路由器或其他網(wǎng)絡(luò)設(shè)備建立物理連接。
數(shù)據(jù)通信：在以太網(wǎng)中，計(jì)算機(jī)通過網(wǎng)卡發(fā)送和接收數(shù)據(jù)幀。網(wǎng)卡負(fù)責(zé)將數(shù)據(jù)幀發(fā)送到以太網(wǎng)上，并從以太網(wǎng)上接收數(shù)據(jù)幀，然后將其傳遞給計(jì)算機(jī)的操作系統(tǒng)或應(yīng)用程序。
地址識別：每個(gè)網(wǎng)卡都有一個(gè)唯一的MAC地址（Media Access Control address），用于在以太網(wǎng)中唯一標(biāo)識該網(wǎng)卡。當(dāng)數(shù)據(jù)幀發(fā)送到以太網(wǎng)上時(shí)，它會包含目標(biāo)MAC地址。網(wǎng)卡會檢查每個(gè)接收到的數(shù)據(jù)幀的目標(biāo)MAC地址，如果與自己的MAC地址匹配，則會接收該數(shù)據(jù)幀。
以太網(wǎng)通信適配器通常被安裝在計(jì)算機(jī)的主板上，或者是作為一個(gè)獨(dú)立的擴(kuò)展卡插入到計(jì)算機(jī)的擴(kuò)展槽中。在現(xiàn)代計(jì)算機(jī)中，許多主板都集成了以太網(wǎng)通信適配器，因此用戶無需單獨(dú)購買和安裝網(wǎng)卡。

5069-AENTR

5069-AENTR Ethernet communication adapter, also known as a network adapter or NIC, is a computer hardware device used to connect a computer to Ethernet (a widely used local area network technology). It is a necessary interface device for computer communication in LAN.
Specifically, the main functions of Ethernet communication adapters include:
Data conversion: The digital signal inside the computer is converted into a signal that can be transmitted over the Ethernet network, and the Ethernet signal received is converted back to a digital signal that the computer can understand.
Physical connection: A physical connection is established to an Ethernet switch, router, or other network device through an Ethernet cable (usually twisted pair or optical fiber).
Data communication: In Ethernet, computers send and receive data frames through network cards. The network card is responsible for sending data frames to and from the Ethernet, and then passing them on to the computer’s operating system or application.
address identification: Each network adapter has a unique Media Access Control address (MAC) that uniquely identifies the network adapter on the Ethernet. When a data frame is sent to the Ethernet, it contains the destination MAC address. The network card checks the destination MAC address of each received data frame and, if it matches its own MAC address, receives the data frame.
The Ethernet communication adapter is usually installed on the computer’s motherboard, or is inserted as a standalone expansion card into the computer’s expansion slot. In modern computers, many motherboards have integrated Ethernet communication adapters, so users do not need to purchase and install network cards separately.

其他型號推薦：