电脑无线网卡的接口类型有几种

2025-02-15 23:27:24
推荐回答(2个)
回答1:

总的来说有四种,无线上网卡主要应用在笔记本上和PAD(
掌上电脑)上,还有部分应用在台式机上,所以,其接口也有多种规格。常见的接口主要有PCMCIA接口、USB接口、EXPRESS34接口、EXPRESS54接口、CF接口等几类。如用于台式机的PCI接口无线网卡,用于笔记本电脑的PCMICA、
MINI-PCI接口无线网卡和更为方便的USB无线网卡等。
PCMCIA接口
这种类型接口的无线上网卡一般是笔记本等移动设备专用的,它受笔记本电脑的
空间限制,体积远不可能像
PCI接口网卡那么大。PCMCIA总线分为两类,一类为16位的PCMCIA,另一类为32位的CardBus。CardBus是一种用于笔记本计算机的新的高性能PC卡
总线接口标准,就像广泛地应用在台式计算机中的PCI总线一样。该
总线标准与原来的PC卡标准相比,具有以下的优势:第一,32位数据传输和33MHz操作。CardBus快速
以太网PC卡的最大吞吐量接近90
Mbps,而16位快速以太网PC卡仅能达到20-30
Mbps。第二,总线自主。使PC卡可以独立于主CPU,与
计算机内存间直接交换数据,这样CPU就可以处理其它的任务。第三,3.3V供电,低功耗。提高了电池的寿命,降低了计算机内部的热扩散,增强了
系统的可靠性。第四,后向兼容16位的PC卡。老式以太网和Modem设备的PC卡仍然可以插在CardBus插槽上使用。
USB接口
USB(Universal
Serial
Bus,
通用串行总线
接口)由于其传输速率远远大于传统的
并行口和
串行口,设备安装简单并且支持
热插拔。USB设备一旦接入,就能够立即被计算机所承认,并装入任何所需要的
驱动程序,而且不必重新启动系统就可立即投入使用。当不再需要某台设备时,可以随时将其拔除,并可再在该
端口上插入另一台新的设备,然后,这台新的设备也同样能够立即得到确认并马上开始工作,所以越来越受到厂商和用户的喜爱。

CF接口
CF(Compact
Flash)型无线上网卡主要应用在PDA等设备里面,CF卡遵循ATA标准制造,不过它的接口是50针而不是68针,分成两排,每排25个
针脚。
CF卡分为两类:Type
I和Type
II,二者的规格和特性基本相同。两种型号之间的唯一区别在于卡的厚度。CF卡不是硬盘那样的针型接口而是50针(1.27
mm)的孔型接口,因此不容易被损坏,这一设计和PCMCIA接口类似。
SD接口
至于SD接口或是Express
card接口的产品,我们建议大家暂时不用考虑。SD接口的无线上网卡要求设备具有SDIO接口,这只有少数PDA支持,而且价格不菲。至于Express
card接口,虽说它取代PCMCIA接口的长远趋势勿庸置疑,但是至少现阶段还显得太过超前。

回答2:

从无线网卡采用的接口划分,有PCI无线网卡(包括ISA接口)、USB无线网卡和PCMCIA无线网卡(包括CF接口)。

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