guessing they are 520 formated. look up " level1techs 520"

Those quantum bigfoot 5.25" drives were pretty damn good with feedback. pide/pata were still quiet compared to some of the 2.1gb 50pin scsi disks I ran for a bit in some prosignia 300s.

first off, bidi optics only really make sense when you are trying to densely pack signals into a run without doing cwdm or dwdm. bidi optics require matched pairs… you must buy a “flipped” side, i.e. 1310/1490 side 1, 1490/1310 side 2. also, bidi are single mode, use single mode / SM fiber with it. if you mix and match single mode with multi mode, you will have a chance of packet loss, or not working at all. they are physically two different sizes of glass.

tplink is so generic I wouldn’t worry about brand compatibility.