Yeah, you can see the damage and some solder rework on the big inductor L9L1, and half of C9L1 is still on the board, plus there's some other rework been done with surface mount capacitor C8M1 being replaced with a through-hole. Given the amount of damaged components I'm surprised at how little damage there seems to be on the PCB. I think there's a fair chance there may be more wrong with the board.
PIcking up on Pentiumspeed's point, I noticed that the replaced capacitor is a Chongx, who don't have a particularly good reputation, e.g.: https://www.eevblog.com/forum/projects/beware … ngx-capacitors/
I went with ferrite bead for my guess for a couple of reasons. Firstly, I don't think I've ever seen a diode that doesn't have some sort of case marking for polarity, and I can't see even a faint one on that component in bofh's photos. Other diodes on the board have one end marked with a grey stripe. Secondly, the silkscreen marking for it is FB, and other diodes on the board are designated CR (current rectifier?). If you look over by the PS/2 port there are a bunch of unpolarised components where you'd expect to see some ferrite beads and the silkscreen has them as FB.
OTOH, it seems an odd place to have a ferrite and it's not completely unknown for silkscreen to have mistakes. If luckybob can check the components on an actual board then that's far better than random guessing on my part.