| 词条 | XJACK |
| 释义 |
|align = right |direction = horizontal |footer = The XJACK extends from the PC Card for use, and retracts back for storage |footer_align = left |width = 180 |image1 = XJACK network card extended.jpg |image2 = XJACK network card retracted.jpg }} In laptop computing, the XJACK is a type of extendable connector or antenna for a type II PC card, designed by the Megahertz subsidiary of 3Com. When not in use, the XJACK retracts into the PC card for storage. The XJACK was originally used in modem and network cards, to attach a standard RJ11 or 8P8C plug directly to the PC card. They do not require a separate dongle, which could be lost or misplaced, and do not need to be removed from the laptop when travelling. An alternative approach is to use larger type III cards with a regular modular connector socket, but this approach requires more space.[1] Wi-fi PC cards for accessing wireless networks have an external portion containing the antenna for improved reception (as compared with inside the laptop), but this portion of the card may be accidentally damaged while moving the laptop. 3Com manufactured wireless cards with retractable antenna portions, also under the XJACK name.[2] Other companies have since manufactured wireless cards with retractable antennas.[3]References1. ^{{cite web |url=http://www.3com.com/other/pdfs/products/en_US/40036007.pdf |publisher=3Com |title=3Com LAN+Modem Cardbus Cards |date=August 2002|accessdate=1 August 2008}} 2. ^{{cite web |url=http://www.3com.com/other/pdfs/products/en_US/3Com-400914.pdf |title=3Com Wireless 11a/b/g PC Card with XJACK Antenna |publisher=3Com |date=January 2006 |accessdate=2008-08-01}} 3. ^{{cite web |url=http://www.akihabaranews.com/en/news-11071-AX420S,+the+PHS+204kbps+CF.html |title=AX420S network card |accessdate=2008-08-01}} 1 : Computer connectors |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。