About to replace internal SE/30 hard drive with SCSI2SD; confused about which cables to connect to SCSI2SD

[HeartletTullius]

Hi everyone!

I'm about to replace my Macintosh SE/30's internal hard drive with a SCSI2SD that I have working with no issues. I opened my machine for the first time today to try and disconnect the old drive and hook up the new one, but I noticed that there is a cable next to the hard drive ribbon cable that doesn't have an equivalent port on my SCSI2SD. This is probably better explained with the pictures below:

This is the cable I'm speaking about on my Macintosh SE/30 (the cable on the left is a ribbon cable)

View attachment IMG_3581.HEIC

This is the port on my SCSI2SD, which doesn't look like it would take the cable shown above:

View attachment IMG_3582.HEIC

Just to be absolutely clear, I've found a picture on the internet showing the cable I'm speaking about, but in the view of the whole machine!



Do I need to connect this cable to my SCSI2SD and if so, do I need to get an adapter for my SCSI2SD? Any help with this would be great!

Also, I opened my Macintosh SE/30 for the first time today and I'm terrified of accidentally touching the CRT. How long should I leave it before it's safe to go near? Thanks a lot  

 

[Mighty Jabba]

The cable you're talking about provides power to the hard disk, and you will need an adapter for it. As for the CRT, just waiting for it to discharge can be problematic since it can take quite a while and there's no specific time beyond which it is definitely safe. But if you're just attaching the SCSI2SD and not doing something major I would think you would be okay just being very careful not to touch any part of the CRT.

(Edited due to temporary stupidity)

 

[HeartletTullius]

The cable you're talking about provides power to the hard disk, but the SCSI2SD doesn't need that much power to work, so you don't need to connect that cable. As for the CRT, just waiting for it to discharge can be problematic since it can take quite a while and there's no specific time beyond which it is definitely safe. But if you're just attaching the SCSI2SD and not doing something major I would think you would be okay just being very careful not to touch any part of the CRT.

@Mighty Jabba Hi! Thanks for the reply! So, I should be fine leaving that cable disconnected and just hooking the SCSI2SD to the ribbon cable? Thanks  

 

[Mighty Jabba]

Sorry, I misremembered and edited my reply as you were replying. You DO need a "4-pin molex to berg" adapter.

 

[HeartletTullius]

Sorry, I misremembered and edited my reply as you were replying. You DO need a "4-pin molex to berg" adapter.

@Mighty Jabba That's great! Thanks for attaching the name too! Would this one be OK? Does it being dual matter? Thanks

 

[Mighty Jabba]

As far as I know that would be fine. How are you planning on mounting the board, and do you plan to leave the hard disk in place?

 

[HeartletTullius]

As far as I know that would be fine. How are you planning on mounting the board, and do you plan to leave the hard disk in place?

@Mighty JabbaThanks a lot, I'll order that now! I'm planning on leaving the HD in place and just hooking up the SCSI2SD for now. After I have it all setup, I'm gonna take it out and get a holder for it! 

Thanks for all your help with the adapter! I really appreciate it

 

[Torbar]

If it's a SCSI2SD V5, you typically don't need to use the power connector as it will get power over the SCSI cable's termination power

http://www.codesrc.com/mediawiki/index.php/SCSI2SD#Technical_Specifications

 

[HeartletTullius]

If it's a SCSI2SD V5, you typically don't need to use the power connector as it will get power over the SCSI cable's termination power

http://www.codesrc.com/mediawiki/index.php/SCSI2SD#Technical_Specifications

Hi! Sorry, I should have said which version I had in my post! I have an SCSI2SD v5.1. Would I need the cable for this? Thanks 

 

[Mighty Jabba]

If it's a SCSI2SD V5, you typically don't need to use the power connector as it will get power over the SCSI cable's termination power

http://www.codesrc.com/mediawiki/index.php/SCSI2SD#Technical_Specifications

Really? Why does Inertial Computing bundle them with the adapters then?

 

[cheesestraws]

Really? Why does Inertial Computing bundle them with the adapters then?

Some machines/some models are marginal and don't provide enough power, and the Plus doesn't provide any power at all.  So, sometimes you need them, but mostly not.

 

[Mighty Jabba]

Sorry if I gave any inaccurate advice. When I installed my SCSI2SD in my SE/30, I did use the adapter and it works fine, so it's not as though having it will be an issue. But if you can save a little money by not buying one that would obviously be better. Should OP just give it a try without it and see how it works then?

 

[Crutch]

Yes. You definitely do not need to connect a SCSI2SD 5.1 to any internal power in order for it to work in an SE/30 (there is nothing dangerous/damaging about doing so, but it is unnecessary).  

Just connect the SCSI ribbon cable and you’re good to go.  The SCSI2SD 5.1 can run off of term power, which the SE/30 kindly provides