USB

Until recently, USB only been widely used. From November 11, 1994 version released later USB V0.7, USB version has gone through years of development, has now been developed for the 3.0 version, a standard extension to the current computer interfaces. At present the main board is the use of USB1.1 and USB2.0, USB version of the compatibility between the well. With a 4-pin USB (USB3.0 standard 9-pin) connector as standard plugs, daisy-chain all the peripherals you can connect up to 127 external devices can be connected, and no loss of bandwidth. USB requires a host of hardware, operating systems and peripherals to support three areas to work.

The current board is generally used to support USB function control chipsets, motherboards are also equipped with USB interface socket, and the back of the socket in addition, the board also set aside a USB pin, front of the chassis received through the connection As a pre-USB interface to facilitate use (note that in connection to carefully read the motherboard manual and press the graph connected, do not take the wrong leaving equipment damage.) And USB interface can also be connected through a special USB cable to achieve double machine interconnection, and can be extended through the Hub more interfaces.

USB has a transmission speed (USB1.1 is 12Mbps, USB2.0 is 480Mbps, USB3.0 is 5 Gbps), easy to use, support hot plug, connecting flexible, independent power supply, etc., can be connected to the mouse, keyboard, printer , Scanners, cameras, flash drives, MP3, mobile phones, digital cameras, mobile hard drive, external optical floppy, USB card, ADSL Modem, Cable Modem, etc., almost all external devices. USB interface for connecting up to 127 peripherals, such as mouse, modems and keyboards. Since the 1996 launch of USB, serial and parallel port has been successfully replaced, and a large number of today¡¯s personal computers and intelligent devices will be equipped with one interface.

What are the main similarities of USB and IEEE1394?

1. Both are a common external device interface.

2. Both can quickly transfer large amounts of data.

3. Both can connect many different devices.

4. Both support hot-swapping.

5. Both can be no external power supply.

What are the differences of USB and IEEE1394?

1. Both the transmission rate. USB transfer rate compared with the rate of IEEE1394 is really dwarfed. USB transfer rate is now only 480Mbps, can only connect keyboard, mouse and microphone and other low speed devices, and IEEE1394 can use 3.2Gbps, can be used to connect digital cameras, scanners, and information appliances that require high-speed equipment.

2. Two different structures. USB connection must be at least in a computer, and must be required to achieve HUB interconnection, the network can connect up to 127 devices. IEEE1394 do not need a computer to control all devices, do not need to HUB, IEEE1394 bridge can connect multiple IEEE1394 network, that is achieved in 63 with IEEE1394 IEEE1394 device can also be used after the bridge to the other IEEE1394 network connection Up to unlimited connections.

3. Two different intelligence. IEEE1394 network can increase or decrease in their devices automatically reset when the network. USB HUB is connected devices to determine changes in the.

4. The application of the two different levels. Now USB has been widely applied to various aspects of almost every PC motherboard USB interfaces are set, USB2.0 will further increase the range of USB applications. IEEE1394 now only be applied to audio, video and other multimedia.

HK Alifan Electronic Commerce Co., Limited is at Huaqiang Road, Futian District Shenzhen City, Guangdong Province, P.R.China, Our manufactory is at Longgong District,Shenzhen City. These place is the electronic trade centre of china.

Relying on 8 years'profound professional technology and service deposite, Resorting to highly efficient modern enterprise operation mechanism and sustained innovation, HK Alifan Electronic Commerce Co., Limited has make great progress Over the past several years.

Currently we are more than 50 workers and keeps continuous growth with more than everage 53.8 percent per year increasing speed.We have went through A&V (authenticated and verified by ACP) checked and authentication of ISO9001 quality system.

The Company's principal products are Memory card Usb flash drive, 3g wireless modem and MID. Digital camera, video camera, mini video camera, car monitoring recorder, vehicle DVD, apple accessories, We can provide OEM/ODM for our customer ,The part of our products have been with CE, FCC, RoHS approval. Our factory has equipped with well-equipped testing equipment and strong technical force. With a wide range, good quality, reasonable and competitive prices and stylish designs, our products are extensively used in digital related areas and other industries. We offer long term warranty for our products and offer very competitive prices to our customers. Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs.

Over 8 years of business practice, The produces have sell to a lot of places ,we have established and maintained excellent business relationships with our customers from many parts of the world such as United Kingdom, USA, Italy, France, Australia ,India, Malasia, HongKong,Singapore, Korea, Spain, UK, Russia, Middle East, etc.

The success of Alifan electric lies within the competence and dedication of our people. We employ a group of special skilled people , They are the electric engineer, over 8 years skilled workers, the experienced trade and custom services professionals.

We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!

HK Alifan Electronic Commerce Co., Ltd.
Add: Room A1111, A Block, Oriental Times square, Huaqiang Road, FutianDistrict, Shenzhen City, Guangdong Province, P.R.China
P.C: 518000
Contact: Lisa xu
Mobile: 86-18926037837
Tel: 86-755-83262141
Fax: 86-755-83262141
Email: aifan@hkalifan.com
Web: http://www.alifanchina.com/