Bent + missing pins on a SATA HDD drive?

I have a Western Digital Cavilier SE 2500JS-60NCB1 with some bent and broken pins.  This is a photo of it:

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#1 in the picture is what’s broken. I have no idea what 2 + 3 are, but I hope I can connect either of these, instead of #1, to the motherboard. #4 is fine + was in the picture by accident.

Excuse me, this is the photo: