Introduction to various interfaces of wireless network interfaces

If you want wireless Internet access, you often ignore the excuse type of your laptop or desktop, and blindly sell the wrong wireless network card to access the Internet. Next we will introduce in detail the types of interfaces for wireless network interfaces. This helps you select the correct network card.

What are the interfaces for wireless network interfaces?

Currently, wireless network adapters are mainly used on laptops and PDAs), and some are used on desktops. Therefore, their interfaces also have multiple specifications. Common interfaces include PCMCIA, USB, EXPRESS34, EXPRESS54, and CF.

Wireless Network Interface: PCMCIA Interface

The wireless network adapter for this type of interface is generally dedicated to mobile devices such as laptops. It is limited by the space of the laptop, and its size is far from as large as that of the PCI interface network adapter. There are two types of PCMCIA Bus: one is 16-bit PCMCIA and the other is 32-bit CarIa.

Cartana is a new high-performance PC Card Bus Interface Standard for laptops, just like PCI bus widely used in desktop computers. Compared with the original PC Card standard, the bus standard has the following advantages: first, 32-bit data transmission and 33 MHz operation. The maximum throughput of the carton Fast Ethernet PC Card is close to 90 Mbps, while the 16-bit fast Ethernet PC Card can only reach 20-30 Mbps. Second, the bus is independent. The PC Card can directly exchange data with the computer memory independently of the master CPU so that the CPU can process other tasks. Third, 3.3V power supply, low power consumption. It improves the battery life, reduces the heat diffusion inside the computer, and enhances the system reliability. Fourth, backward compatible with 16-bit PC cards. The PC cards of old-fashioned Ethernet and Modem devices can still be inserted in the cartana slot.

Wireless Network Interface: USB Interface

USB Universal Serial Bus, Universal Serial Bus Interface) because its transmission rate is much higher than the traditional parallel port and Serial port, the device is easy to install and supports hot swapping. Once the USB device is connected, it can be recognized by the computer immediately, and loaded into any required driver, and can be put into use immediately without restarting the system. When you no longer need a device, you can remove it at any time and insert another new device on the port. Then, this new device can also be immediately confirmed and started to work, so it is becoming more and more popular with manufacturers and users.

Wireless Network Interface: CF Interface

CFCompact Flash) type wireless network card is mainly used in PDA and other equipment, the CF card is manufactured according to ATA standard, but its interface is 50 needles instead of 68 needles, divided into two rows, 25 pins per row. Cfcards are classified into two types: Type I and Type II, which have the same specifications and features. The only difference between the two models is the card thickness. The CF card is not a needle interface like a hard disk, but a 50-pin (1.27mm) hole interface, so it is not easy to be damaged. This design is similar to the PCMCIA Interface.
SD interface or Express card Interface
We recommend that you do not consider the SD interface or Express card interface products for the time being. SD-interface wireless NICs require devices to have SDIO interfaces, which are only supported by a few PDAs and are expensive. As for the Express card interface, although it does not doubt the long-term trend of replacing the PCMCIA Interface, at least it is too advanced.