WiFi adapter refers to a wireless network card.
Wireless network card is a terminal wireless network equipment, is not through the wired connection, the use of wireless signals for data transmission terminal.
Wireless network cards can be divided into various types according to different interfaces:
1. Desktop PC dedicated PCI interface wireless network card.
2. PCMCIA interface network card for laptop.
3.USB wireless network card, this network card whether it is a desktop user or a laptop user, as long as the driver is installed, it can be used. Note that only wireless network cards using USB2.0 interfaces can meet the needs of 802.11g or 802.11g.
4. MINI-PCI wireless network card widely used in notebook computers. MINI-PCI is a built-in wireless card used by Centrino models and non-Centrino models as standard wireless cards. Its advantage is that it does not need to occupy a PC card or USB slot, and it does not need to carry a PC card or USB card at any time. These wireless cards in the price gap is not large, in the performance\/function is similar, can be selected on demand.
The mainstream rate of wireless network card is 54M, 108M, 150M, 300M, 450M. The performance and the environment have a great relationship.
54Mbps: Its WLAN transmission speed is generally between 16-30Mbps, which is converted to MB, that is, the transmission speed per second is about 2MB-4MB. Take the middle value of 3MB, such a speed to transfer 100MB file takes about 35 seconds, to transfer 1GB file, it takes at least more than 4 minutes.
1, the wireless network adapter is a wireless network card, and the general network card that is the network adapter is not a concept. The general NIC interface is RJ45, that is, the network cable. The network interface of a wireless card is a wireless signal, which is generally connected through WLAN.
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2, wireless card can be built-in or external. Like Intel's Centrino chipset, which has a built-in wireless card. For ordinary desktop computers, you generally need to connect an external wireless network card to the computer via USB.
3. Network card is a piece of computer hardware designed to allow a computer to communicate on a computer network. Because it has a MAC address, it belongs to Layer 2 of the OSI model. Network cards allow users to connect to each other either wired or wirelessly.
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4, each network card has a unique 48-bit serial number, called the MAC address. It's written in the ROM on the card. Every computer on the network must have a unique MAC address. No two production network cards have the same address, because the Institute of Electrical and Electronics Engineers is responsible for assigning unique MAC addresses to network interface controller vendors.
In simple terms, Miracast wireless wifi screen device (also known as Push), is to push the games, audio, video, pictures, documents on the smartphone to the TV or projector, to achieve the effect of large screen browsing. Take Kaibo wireless screen device TP002\/TP003 as an example, first connect one end of the Micro HDMI cable (note: generally comes with) to the same screen device, and connect the other end to the TV or projector HDMI interface; Then the USB charging cable with WiFi module is connected to the wireless screen device and the USB power adapter to power the wireless screen device, so that the connection is successful, is not very simple