It has been found that USB Ethernet adapters are widely available. One can purchase these adapters at stores such as Best Buy, Walmart and Tiger Direct. These are also widely available online from sites such as Amazon and eBay.
One can usually buy USB to Ethernet cords at any major electronics retailer like Best Buy or Radio Shack, but these places are very expensive. One should buy it online at Amazon.
Buy a new one.
Here is a picture of an usb to hdmi adapter "http://www.amazon.com/eForCity-Micro-USB-HDMI-Adapter/dp/B005NG71K8" . One can buy it for example on amazon or at the local electronic store.
There are a number of retailers that sell a Firewire to USB adapter. One can purchase such an item from Amazon, ebay, Maplin, Staples, Walmart and Best Buy.
An USB audio adapter can be purchased in every electronic store. Alternatively one could buy them at websites like Amazon, LogiLink, or, if one doesn't mind an used item, at eBay.
There are several websites one may purchase a wireless USB adapter. Some of these websites include eBay, Amazon, Walmart, Best Buy, Newegg, and Target.
Yes, it is possible to have two ethernet ports on a laptop. While there is no laptop that I am aware of that comes with two, you can still add a second device. Ethernet adapters come in both PC Card and USB varieties, so assuming you have a free USB port or PC Card slot you can simply plug one in. In this configuration, you can use the onboard network adapter, and the USB/PC Card adapter at the same time.
It depends on where you buy it, but I think it costs in the neighborhood of $40-60. The sale would likely be over, but you can still wait a while until the next one comes along.
There are many places to purchase a USB wireless adapter. It depends if you want to purchase one online or in store. Best buy has many options to choose from, both online and in store.
If you do not have one, you can purchase usb bluetooth adapter.
USB stands for Universal Serial Bus... If you meant to ask if you can use your USB port to somehow connect to the internet, then yes. You can get a USB wireless (Wifi) adapter if you have a wireless network (or wireless router, connect to a high-speed internet connection like Cable, DSL, etc...) If you do not have, or don't want a wireless network but would still like to connect to the internet through Ethernet, but don't have an Ethernet network card on your computer, you can use a USB Ethernet adapter.
Not sure exactly what you mean, if the ethernet cord connects to the wireless adapter then yes. (Or the wireless dongle plugs into the ethernet port). Can you unplug one then use the other then yes.If you mean can you use a USB wireless dongle and the ethernet connected to the same network then no.
One can find out more about USB ethernet connections by visiting the 'How Stuff Works' website. One can also view reviews of USB ethernet products via the Amazon website for further information.