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I have an IBM 5170 board which suffered some damage from a leaking battery. It's mostly cleaned up but will most likely need some components replaced soon. Specifically, does anyone know what the component pointed to is? It's labelled FB2 and sits behind the backup battery connector by the...

I followed your recommendation and got one too - love it! Works every time, when my other, cheap generic brand new one fails to read or write every second disk (and I know they're still good). Thanks for the tip!

For those who are using ultrasonic cleaners for boards (and other computer related components, if applicable): What sort of cleaning solutions are you using, if any? There seem to be quite a few that seem suitable for use on electronics. Bonus points if they're available in the US :-) Also, any...

What is a good quality external USB floppy drive I can use on either Windows or Mac machines to write floppy images (and that is still available to buy)? The one I have is too flaky and probably about to give up. Thanks!

I've got this expansion card with a brand of "Schlumberger" and an identifier of 100103-B, 100104-REV that I am unsure of what it is (see details in the pictures below). It came in an IBM 5170 I'm restoring right now, and had long ribbon cables with a to me unknown connector type hanging out of...