You can buy it online at stores like Amazon. IF you do not have the option or time to buy it online, you can go to your local best buy or other electronic store. Best Buy is your best bet. You can find one on their website and pick it up in the store.
They do make universal USB serial adapters. They are very affordable.
A serial to USB adapted can be bought from a variety of different locations. These include a local computing store, an electronics store, or sites such as Amazon.
The highest rated cable is the Dynex 16" USB PDA/Serial Adapter Cable
Connecting an adapter USB to a serial port is very simple. All you need to do is purchase a USB Serial Adapter. These range in price from $6.00 used to upwards of $30.00 new. http://www.Amazon.com provides several USB serial adapters to purchase online.
usb port driver, serial adapter,
If you need to use an older serial device, than a USB to serial adapter is required. This adapter has all of the required drivers programmed into it to ensure that the use of your serial device is seamless.
Get a USB to Serial adapter with standard thumbscrew connectors so you can make sure you have a secure connection that won't accidentally come apart.
I want to buy a USB serial adapter for my small business which could likely be the answer to my problems but I need to find out if there are different versions.
That means that you're using a USB to Serial adapter like this: http://sewelldirect.com/usbtoserial.asp Prolific is one of the companies that makes USB to Serial chipsets, and when you are using one of their adapters it will show up on your computer like that. Many newer computer do not have serial ports on them so you need a USB to Serial adapter to be able to use serial devices with your computer. If you have a laptop and you're using a docking station then it might have a USB to Serial adapter inside of it which is using the Prolific chipset.
A serial USB adapter can be found at any local retail store that sells electronic equipment. Radio Shack or Staples would be a couple of solid recommendations.
You can buy a USB to serial adapter, which will get the job done.
A good place to search for a USB serial adapter would be on the website tigerdirect.com. The website provides multiple matches for your search to offer competitive prices.