SilverLeaf has resold two different brands of USB to Serial adapters.
Both the Bafo BF-810 and the Sabrent SBT-USC1M use the Prolific PL-2303 USB to Serial Bridge Controller to convert Standard RS-232 to USB for Laptops that don't have built in RS-232 Serial ports.

Filler..

SilverLeaf re-sells a USB to Serial adapter with a Prolific USB to Serial adapter chipset.

Here are the Drivers for Windows.

These are the Additional Diesel Engines supported by VMSpc that are NOT included in the VMSpc 2.4 Build 2 Install program.

Future versions of VMSpc will include these Engines in the VMSpc Install Program.

The VMSpc software is always available for download on this site. Upgrades are free forever. If you don't have the VMSpc Cables and Hardware you can still download and install the software. You can see for yourself how easy it is to customize VMSpc to your tastes. And when you are ready to "go live", give us a call at (888) 741-0259 and we'll set you up with everything else you need.

In order to make your installation as easy as possible, we will ask you what type of Diagnostic Plug you have in your Coach. Refer to the document, SilverLeaf Electronics J1708/J1587, J1939, RV-C Wiring Diagrams to identify what the Diagnostic Plugs look like.

To get started using the VMSpc Software, download the VMSpc Distribution CD v2.5 build 10 zip file onto your computer and unzip it into a folder on your PC. To start a fresh installation, run the Install program in that folder (VMSpc25_Install.exe). If you are simply updating an existing installation, just copy the VMSpc.exe file into your existing VMSpc folder, which will Replace the older version of the Program.

If you are having difficulty Installing VMSpc, please refer to our Frequently Asked Questions page for further hints on what might be causing problems.

Once you have purchased the VMSpc Hardware and Cables, you will need to Install the USB to Serial and USB Virtual Com Port software to achieve communications between the VMSpc JIB and your Computer.

VMSpc Downloads