I have a real pet hate regarding 'surge protectors' in all their guises.
At best, they will soften the incoming AC to remove general RF noise. At worst, they will quite happily sit there converting a (reasonably accurate) 50/60Hz sine wave into a square wave (with or without lead-in and lead-out peaks). Sure, they'll protect against a bit of a surge, but anything you plug into it that uses a switched mode transformer is going to have a really hard time of it.
I'm surprised your motherboard blew instead of your computer's PSU, but I'm not surprised your speakers didn't last.
Resign the surge strip to the bin. If you really want to protect your gear, get a line interative UPS, preferably from Leibert.
At best, they will soften the incoming AC to remove general RF noise. At worst, they will quite happily sit there converting a (reasonably accurate) 50/60Hz sine wave into a square wave (with or without lead-in and lead-out peaks). Sure, they'll protect against a bit of a surge, but anything you plug into it that uses a switched mode transformer is going to have a really hard time of it.
I'm surprised your motherboard blew instead of your computer's PSU, but I'm not surprised your speakers didn't last.
Resign the surge strip to the bin. If you really want to protect your gear, get a line interative UPS, preferably from Leibert.