I've been thinking about buying the proper version and cable from ross-tech but before I did I downloaded the lite version and bought one of those quality cables of fleabay. At £7 quid I thought it was worth a go.

However I cant even get started. My laptop has 3 USB ports but these are COM 12, 13 and 14.

In VCDS lite it asks you to test the interface on ports 1,2,3 or 4. So I cant test it as those ports dont match my USB port numbers so the test obviously fails.

I know these cables aren't supported but even if I bought a proper ross-tech cable why would it be any different, my USB COM ports would still be 12, 13 and 14 whatever I plug in them.

Can anyone help with this as I dont want to pay out for a proper cable if I cant guarentee it'll work with my PC.

Its a HP DV6000 running Vista Home Premium if that helps.

Any help much appreciated. Cheers.

I've been thinking about buying the proper version and cable from ross-tech but before I did I downloaded the lite version and bought one of those quality cables of fleabay. At £7 quid I thought it was worth a go.

However I cant even get started. My laptop has 3 USB ports but these are COM 12, 13 and 14.

In VCDS lite it asks you to test the interface on ports 1,2,3 or 4. So I cant test it as those ports dont match my USB port numbers so the test obviously fails.

I know these cables aren't supported but even if I bought a proper ross-tech cable why would it be any different, my USB COM ports would still be 12, 13 and 14 whatever I plug in them.

Can anyone help with this as I dont want to pay out for a proper cable if I cant guarentee it'll work with my PC.

Its a HP DV6000 running Vista Home Premium if that helps.

Any help much appreciated. Cheers.

Go into system settings ,device manager then select ports right click on your usb serial port, select properties then port settings, select advanced you should then be able to choose a new port for your device.

You will also see the latency setting on the screen if you test the lead and it shows the latency as poor you will need to reduce this from 16ms to get a good .

Edited 3 August, 201015 yr by bazaa

Go into system settings ,device manager then select ports right click on your usb serial port, select properties then port settings, select advanced you should then be able to choose a new port for your device.

You will also see the latency setting on the screen if you test the lead and it shows the latency as poor you will need to reduce this from 16ms to get a good .

Thanks, I'm such a muppet forgot you can repoint the COM ports.

My laptop still doesn't like it though, keeps dropping the connection to the cable in Device Manager. Probably an issue with Vista and/or the drivers. Could always be my expensive cable that's faulty too.

I'll give a try on XP first because if wont work on XP it certainly wont work on any other operating system

well surprise surprise it worked fine on XP.

In Vista, If you alter VCDSLite.exe to run in XP Service Pack 2 compatibility mode and alter the USB power options so they are always enabled it works too