One can purchase a USB memory card reader from Best Buy, Walmart, Staples, Office Max and Office Depot. One can also purchase this item online from Amazon or Newegg.
You will have to purchase a USB card reader. They are very inexpensive and can be bought anyplace that sells computer accessories.
A micro Sd card is the best to use because Kingston makes a usb reader for micro SD cards. You plug the micro SD card into the USB reader then the USB reader is plugged into one of the USB ports on your laptop and will read it as an external drive.
Nearly every memory card reader on the market is USB compatible, and simply plugs directly into one of your computer's USB ports.
USB stick or memory card (with a USB card reader)
A USB sim card reader can be purchased from a number of online retailers in a variety of sizes. Retailers such as Amazon and ebay sell this product online.
One could purchase an xD card reader online through Amazon's or Ebay's. One can choose from different types of varities, size, color and capacity of the said card reader.
A usb barcode reader can be purchased from the companies that make them such as Symbol. They can also be purchased from PCWorld who have a business department.
You can purchase a USB video card almost anywhere that sells computers. Best buy is probably the best and cheapest place to find what you are looking for.
The least expensive one I have came across was the Kingston 19-in-1 USB 2.0 Flash Memory Card Reader for $14.99
SD memory card readers can be purchased from a variety of locations, and the cost will depend on this. One can find a cheap USB SD card reader for as little as $2 on eBay.
There are many companies on the internet where one could purchase a SmartMedia card reader. A few of the companies that offer a SmartMedia card reader on the internet include eBay, Amazon, and Walmart.