This phone only has an internal serial interface, and you should get a USB to serial cable marked for this phone.
Available from Verizon Wireless in store or on the web. It is also sold by a number of other stores and on eBay. A Prolific PL2303 chip is used to perform USB to serial.
Windows
This cable works well and is reliable. The cable comes with drivers for Windows.
Linux
Linux has drivers builtin, and should use the
pl2303module.Mac
You will need to get drivers from the Prolific web site at http://www.prolific.com.tw/eng/downloads.asp?ID=31
Available at RadioShack as catalog# 17-792 and will work with the VX4500, VX4600 and the VX6000.
This cable has a blob half way along the cable that converts from USB to serial and then connects to the serial interface in the phone. The chip inside the cable is a Prolific 2303 and this is how your operating system will report it.
Windows
This cable works well and is reliable. You will need to obtain the drivers from FutureDial's website.
Linux
Linux has drivers builtin. Note: There is a bug in the Linux 2.4 kernel that causes many machines to crash when any program stops using the cable. This has been fixed in the kernel versions 2.4.23 and 2.6.
Mac
You will need to get drivers from the Prolific web site at http://www.prolific.com.tw/eng/downloads.asp?ID=31
BitPim Online Help built 17 January 2010