Probably the best place to buy an RS232 to USB converter would be Radio Shack followed by Best Buy. A local computer repair shop may also be able to help.
One can buy a VGA to USB converter from eBay, Office Depot, Walmart, Amazon, Best Buy, or Staples. It can be bought off eBay for as low as $25 or $29 from Parts Express.
There are several places to purchase a SATA to USB converter online. These websites include Amazon, New Egg, Walmart, Best Buy, DH Gate, and USB Gear.
You can buy a USB to serial converter (if they make them) of you can also ghetto one.
One can purchase a RS232 cable at most electronic stores. A few common examples of stores that have RS232 cables for sale are Best Buy, Radio Shack, and Fry's.
It's not that simple, since it needs an A/D converter and software to read it. It's easier to just buy one.
You can buy what is called an external USB Hub. A USB Hub is a device that allows many USB devices to be connected to a single USB port on a host computer or another hub You can buy them just about anywhere...Best Buy, WalMart, RadioShack..etc..
Difference between Rs232 and RS485 is Only Distance RS232 is not for long or far distance .. but RS485 can be use for LONGEST distance ..RS232 is single ended communication where as RS485 is Differential communication.Max.no of receivers in RS232 is only ONE, whereas in RS485 is 32.Max.no of transmitters in RS232 is only ONE whereas in RS485 is 32.IN RS232 there is no pin to change from transmitter mode receiver mode. But, In RS485 have DE pin to set transmitter mode and RI to set receiver mode.
buy a new one
Yes, there are if you are looking to buy one then you should try to look which one is best for you on eBay. If you do not have an eBay account or don't like using eBay then try to go to your local phone store.
If one would like to go out to the store and buy a 16GB USB stick, they could go to Best Buy. Although one could buy from Best Buy online as well, another option would to buy online from Amazon.
You can buy a DVD to iPod converter at retail stores in your local area such as Best Buy. Or you can buy one at sites like Amazon where you can get free shipping.
There are a variety of USB accessories available, and they can be found at electronics stores. The Apple Store, Best Buy, Fry's Electronics, and Amazon all have USB accessories.