Found it in the back of one of my drawers where I was keeping an old laptop... It's some kinda chip, a little under an inch long and it's been 'stored' in some polystyrene... I must have thought I needed it once upon a time, but can't for the life of me think why or what it was for...
Google suggests its part of an aircraft ! But i cunt a4d a plane, so it's not that... Unless I was planning to build one once, and had only got this far, & then I forgot?
Any ideas?