50 pin SCSI?

https://en.wikipedia.org/wiki/SCSI_connector
"The communication connectors on the drives were usually a 50 (for 8-bit SCSI) or 68 pin male (for 16-bit SCSI) "IDC header" which has two rows of pins, 0.1 inches apart."

https://en.wikipedia.org/wiki/Micro_ribbon_connector
"Early SCSI interfaces commonly used a 50-pin micro ribbon connector."

EDIT:
sorry, was a misunderstanding.
This is a notebook right?
Maybe it's kind of a removable harddrive with a proprietary pin layout?
https://www.cnet.com/products/6gb-rem-hard-dr … 1700-1750-3500/
https://www.biocomp.net/o56463.htm

No I doubt it is SCSI, maybe I should have been more clear that it is indeed a notebook. 😀

It is exactly that drive caddy that should be there. But I'm not nostalgic about this thing so I don't care too much for the hard drive itself.

My idea is that I probably wont have any use for the caddy if I just find out what kind of interface it is and somehow use a SATA adaptor for an SSD.

Can you upload a larger image?

From the "REFERENCE GUIDE Compaq Armada 1700 Family of Personal Computers"

MultiBay : A multifunction device compartment that accepts a diskette drive, LS-120diskette drive, Zip drive, second battery pack, or second hard drive.

@weedeeweeThe multibay is the changeable diskette drive.

@errius Sure here is a higher res image.

There were some around I've seen, that they had the 44 pin standard 2.5 IDE connector, 40 pin plus power, then they put the 6 jumper pins inline with it. So all you needed to do was use a 44pin that didn't have a "fat" connector on the end so it didn't push the jumpers aside.

EDIT: Just started wondering if some systems used that to reset jumpers on the fly according to whether CDROM module was installed as slave or whether an extra battery pack or floppy was in the bay instead.

It's before breakfast and you got me hauling my 1750 out... I seeeeee it's smaller than 2.5 pitch, micro IDC... yah as far as I can see the regular 44 pipes into that without too much rearranging, but I need a T6 or something to take it apart to get better look... Ima have breakfast first though

I guess this would be useful since it's the internal IDE hard disk connector...

https://www.elecbee.com/en/idc-cable/3338-2mm … length-8cm.html

Well here's the top and bottom of the PCB from the HDD caddy, the 50 pin is "on top" as it plugs into the connector in the laptop. Which is underneath when you've got the laptop upside down on the bench. Seems like 3 layer PCB though so hard to see what's going on. Pitch of connector matches Compact Flash perfectly.

This is trying to get closer to the back of the 50 pin to see more of what's going on. You'll notice only center of frame is in focus in other shots, and it's near the point where my focus just starts hunting back and forth, so can't get any better than this with cam I've got...

BitWrangler wrote on 2021-05-26, 15:47:

Well here's the top and bottom of the PCB from the HDD caddy, the 50 pin is "on top" as it plugs into the connector in the laptop. Which is underneath when you've got the laptop upside down on the bench. Seems like 3 layer PCB though so hard to see what's going on. Pitch of connector matches Compact Flash perfectly.

wow that is amazing. Just to be clear, are you saying that the connector is the same as a compact flash card? I googled a little and I saw that the width is very close to my dimensions (but I measured very poorly). So if I had a cf card maybe I could jam it in there.. But they are friggin expensive, 30 bucks for a sub par storage solution of 16 gig... But to be honest for that price I'd rather pick a used SSD from my modern computer and replace it with a 1 tb SSD but then I need an adapter.

I saw a video of a guy repairing an IBM from a similar time period. I counted the pins and I think it was 22 or 24 in his I cant remember even numbers for some wierd reason.

https://www.youtube.com/watch?v=v6SflHHoCgg&t=1500s

Its around 10-12 minutes in.

There's some coincidences with this CF-IDE hookup diagram I found, but other things that don't look right, like it doesn't seem to have VCC on 13/38

I'm confused.. is the hard drive standard 1.8" ide/cf but the actual connectors are somehow switched?

It's not checking out the same as a CF-IDE adapter would I think, though I'm going crosseyed staring at it too long and just had to put it back together because the cat tried to kick the screws over for the 3rd time, and he's a thunderstorm on legs static wise. Does not look hopeful that it's that easy.

However, I checked up the part number on the caddy and found... https://microdream.co.uk/hp-compaq-armada-175 … 316269-001.html if you wanna get a SATA adapter for the normal 44 pin side and use that.

EDIT: gah, damn and curse them, I missed the big out of stock sign. derp.
EDIT2: Don't buy this one, it's only the bottom plate, the rest is missing https://www.ebay.co.uk/itm/392408082630

Yeah I had a look as well and also only found that bottom plate.. kind of frustrating.

This turned up listed under wrong brand/model but pic looks right and compaq model numbers are right, it's just the PCB... https://www.pchub.com/acer-travelmate-510-ser … 1transfb-p79446

What's making things difficult is that Compaq seemed to have designated that part number as the "Hard drive", no other numbers on the caddy or anything, and the sticker is on the bottom plate piece, which is stuck to the drive with the pull tab... so you don't know if someone is selling a bare drive, drive with that plate still stuck to it, or the whole drive and caddy.

Other 1700/1750 series part numbers to keep on your watchlist...
255248-001
255292-001
316270-001
316269-001
102140-001

I was hoping at least the two small ones would turn up cheap, thinking nobody wants them, since actual HDD size doesn't matter.

Cool thanks. I drew the same conclusion as you did about the part number. It complicates things.

I wonder if the 1500 series also have the same caddy being similar in size and age. Saw a video of some russian guy changing the drive on one. The connection looks very similar but the connection is on the other side I think. (The construction of the laptop is very different.)
https://youtu.be/Kmb1QivWq_Y

Dug 1580DMT out, yup, they are visually identical.

Haha... You had one of those too..this was harder than I thought It would be. Been reaching and working on this laptop for two days hah.a.

maybe I will just set up those alarms on eBay and put this machine on hold and go play some game for a change. 😉