L550/010 USB port not working properly, non-standard USB ports

I wondering if anyone can shed some light on this strange problem I'm having with my laptop USB ports.
Background.
I have a USB device (CED-M2 USB Chronograph). The device comes with Windows 7 software to upload fps readings.
The CED has a calculator style keyboard - so you can lookup data without the laptop.
My L550 PSLWSA-01000Q, is running Windows 7 professional.
Problem.
When I connect the CED into the USB port the buttons on the CED no longer operate, As soon as the USB lead is disconnected the buttons work. Uploading the data doesn't work either. The buttons freeze occurs as soon as I plug into a powered USB port (even if user not logged into Windows and programs are not running).
I've installed the upload program onto two PC's at home (Vista Home and Windows 7 Home) and both PC's connect to the CED and upload fine. Furthermore, the CED push buttons works perfectly! So, this leads me to think that the hardware or signals from the laptop USB ports is not standard.
I've tried all three laptop ports (e-Sata/USB and normal USB ports), same problem.
Any ideas what could be causing this problem?

Hi Jerry
Firstly, thanks for repsonding.
All L550/010 USB ports appear to work well on other devices (Sierra Wirless card, HP optical mouse, HTC phone), doesn't matter which port (USB, Esata/USB) all works fine with these units.
I've tried connecting the Chrono via a USB 4 port expander - same problem, no comms, chrono buttons locks up. Connect to Home PC running Vista Home and Windows 7 Home and works fine 9 - just can't take those to the range.
The Chrono unit is self powered (9V Alkaline) and it's new, so USB supplied 5V is not a problem.
The buttons seize whenever the laptop is powered up. Also, if the chono unit is powered down, connecting the USB lead to the laptop turns it on (wakes up). This wake up functions on both home desktop PC's and laptop (good), however, with the laptop I can't power down the Chrono as the buttons don't work.
Whilst laptop connected, and rebooting the Laptop, the Chrono buttons will work just before the Press F2 for setup screen comes up - so could it be electrical.
I've downloaded the latest BIOS from Toshiba and Intel chipset too - no change.
I got the unit to connect once tonight - when I plugged my mouse in at the same time - USB configured for mouse, and whilst doing that the Chrono worked. Once mouse working, Chrono stopped. Can't repeat results.

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L550/010 USB port not working properly, non-standard USB ports

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