Maetryx here, 
I have one of those combo floppy drives.  You know: 5-1/4" and a 3-1/2" in one 5-1/4" HH drive chasis.  I don't know how old it is.  I bought it at a second hand store for $5.00 about a year ago I'd say.
My keyboard is a IBM M2 manufactured in 1994.  NO WINDOWS KEYS.  I'll get another one in a heartbeat if this one dies. It's awesome.
Finally, I fired up my 1.5GB hard drive the other day.  "Big deal" you say, as 1.5GB HDD were common just 5 years ago or so.  "Wait up, partner," I say.  "You've NEVER seen one like this before."
This is a Micropolis 1528-15.  It is a full-height 5-14" differential SCSI drive pulled from some mainframe in 1993.  At the time I bought it, it was already several years old!  I believe, but haven't confirmed, that this unit was built in 1989(!).   When I bought this used in 1993, it cost me 
$1100.  
Micropolis had a 7 year warranty back then, which they honored by sending me an updated BIOS chip for the drive so it would work in my PC.  It still required me to purchase a SCSI card (an IN-2000) and a diferential to single-ended converter board made my Rancho Technology.  But I broke the 1GB barrier when the common hard drive options were closer to 120MB.
And it still works! Transfer rate is a theoretical maximum of 5MB/s.  This setup (drive and Rancho card) should still work with any SCSI card, because SCSI has remained backward compatible for a decade.
You can see this wild wonderful setup 
HERE
IN-2000
Rancho Technology converter
Micropolis 1528-15