What is USB?
USB, or Universal Serial Bus is a connectivity specification developed by computer and telecommunication industry members for attaching peripherals to computers.

USB is designed to free all the troubles when installing external peripherals. It eliminates the hassle to open computer case for installing cards needed for certain devices.

It is designed to meet Microsoft Plug and Play (PnP) specification, meaning users can install, and hot-swap devices without long installation procedures and reboots. Furthermore, it allows 127 devices to run at the same time on the bus.

USB bus provides two types of data transfer speed -- 1.5Mbps and 12Mbps and it can provide a maximum of 500mA of current to devices attached on the bus. All these features will only need one interrupt to operate on a computer equipped with USB ports.

Universal means all peripherals share the same connector. Serial simply defines devices can daisy chain together. We will now look at the different parts of USB.

Next: Inside USB

Talk back

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rico palomino, ricopal@juno.com

October 05, 2000

usb pin outs
I need to know th pin out config on a usb plug? looking into the plug from right to left which pin is sbv, sbd0-, sbd0+,and the ground?please help with picture.

USB pinouts
What are the correct connections for USB connectors. My motherboard etc supports USB, but the handbook does not help with connector orientation. I can check the supply connections on the board and work from there.

Need information on UB port -- pin out and how it interacts with the rest of the system.
Want to convert a serial port device to a USB port. Need to know the USB pinout as well as the internal functionality. Any onformation would be extreamly helpful.

USB connector pin-out
I need to know pin-out of USB connectors that is back of my PC, can you help me with a drawing, thanks.

I need to know pin-out of USB connectors that is back of my PC, can you help me with a drawing, thanks.
I need to know pin-out of USB connectors that is back of my PC, can you help me with a drawing, thanks.

USB Port/Cabling Pinouts
Find all the technical info you need on this subject in Chapter 6 of the USB 1.1 Specification:
http://www.usb.org/developers/docs.html

Guy Gooselaw

USB 1.1 logo
I have another questions which I do not know if I am on the right e-mail address but please inform me if you have some information.
Our website is www.maycom.nl and I would like to know if I can use the USB 1.1 logo for promotional use (for the packaging of our new product the HandHeld recorder with Docking Station).
Is there anybody who can help me with this and if I can use can you be so kind to send a logo with at least 300 dpi
I am looking forward to your quick respons.
Best regards and thank you in advance!
Eline Brakel

the use of the logo on product packaging is a right reserved for the product manufacturer
Please refer to the official USB website for info.
http://www.usb.org/channel/logo/logo.html

"This logo is for promotional and advertising use only. It does not take the place of the USB icon which is used on USB cables and to designate USB Ports. The usage guidelines for the logo are available for download along with the package containing the logo files. It is our policy that the logo is for the use of member companies. Retailers are encouraged to use the logo for in store detailing and advertising. However, the use of the logo on product packaging is a right reserved for the product manufacturer. If it is to be used on product packaging material we state that it is only for a product which is on the Integrators List. The Integrators List is a listing of products which have successfully completed the USB-IF compliance program. This product listing is considered a valuable resource by many USB product buyers."