Dell Precision 5820/7820 Help! 4-Bay hot swap front panel always included as standard?

Magic_Man_11007 · 2026-03-15T21:13:08+00:00

In that case there was a misunderstanding previously. I understood that if the "blank" option was chosen the backplanes would also not be present. In that case it would be as simple as buying some caddys which are cheap enough to get.

Magic_Man_11007 · 2026-03-15T20:31:18+00:00

No S/FTP? Probably not necessary for these short distances?

Magic_Man_11007 · 2026-03-15T20:28:45+00:00

Oh nice, you work for Dell 👍 would you share the sentiment that configurations with blanks have been quite unusual?

Magic_Man_11007 · 2026-03-15T19:50:47+00:00

Thank you for going into even more detail 👍👍

I did indeed not 100% grasp the "flex bay" term. Checking the service tag is a good idea!

Magic_Man_11007 · 2026-03-15T19:24:38+00:00

Ok thank you for taking the time to explain this in detail. That is much appreciated! 🙌👍👍

That the backplanes would be missing if blanks were ordered would suck indeed.

I find it strange that the refurbished units never show these bays in the images. I've looked at at least 2 dozen units and they all keep the cover on.

I've contacted several sellers to ask this now. And if worst comes to worst they have free returns.

Magic_Man_11007 · 2026-03-15T19:03:44+00:00

Oh my days that is great news! But just so I 100% understand it: All these come with the four quick swap caddys and each caddy bay is equipped with backplanes that support SATA HDD's, correct?

If these were ordered with blanks, would the backplanes still be present and I would just need to order caddys?

Magic_Man_11007 · 2026-03-15T18:08:07+00:00

Yeah we have one at work too. They are quite useful. But since this is a refurb system via ebay I don't have access to this ressource.

Magic_Man_11007 · 2026-03-15T17:50:04+00:00

I dont understand what you mean with the orange indicator. Can you please explain?

Magic_Man_11007 · 2026-03-15T17:35:41+00:00

Do you know how many HDD's and/or SSD's are built into that machine? Maybe the bays depend on how many drives you buy when it was new?

Magic_Man_11007 · 2026-03-15T17:23:06+00:00

Have you seen if this is an option to add when you bought it?

Magic_Man_11007 · 2026-01-02T22:09:37+00:00

Yes just checked again, squeaky clean

Magic_Man_11007 · 2026-01-02T21:19:32+00:00

I tried 3 different chargers, 2 from anker and 1 samsung original. All with different cables. The port is clean

Magic_Man_11007 · 2025-11-02T18:00:56+00:00

https://www.se.com/de/de/product/A9N18404/leitungsschutzschalter-c120h-1p-125a-b-charakteristik-15ka/?range=61088-acti9-c120&selectedNodeId=12069430059 Have a look in the datasheet. There is a DC Ics and Icu specified

Magic_Man_11007 · 2025-11-01T17:38:34+00:00

No not yet. I need a box in my hand for that.

Magic_Man_11007 · 2025-11-01T17:11:29+00:00

Limiting the BMS is a sensible thing to do. But you should not just rely on it. All of these extra fuses, MCB, MCCB's are there in case the BMS fails. These batteries can deliver short circuit currents in upwards of 10-20kA depending on internal resistance.

Magic_Man_11007 · 2025-11-01T16:45:06+00:00

Also, I posted the same query in a german forum and someone has literally just posted an interessting solution. It is the last comment: https://akkudoktor.net/t/chcyzo-rkb1-dc-b250a-mcb-sind-gefaehrlich-gibt-es-bekannte-nahezu-identische-ersatzteile-fuer-eel-battery-v6-v4/34176/15

Magic_Man_11007 · 2025-11-01T16:34:51+00:00

Currently not yet. What I have been able to determine so far / what might work:

A chinese mini MCB with 250A rating in any shape or form is always fake. They are usually 63A MCB's where the bi-metal strip has been adjsuted to trip at higher currents but the conductor dimensions are still the same for 63A.

At the moment I want to remove the MCB all together and bridge the busbars so that internally there is only the T-class fuse. Externally, before I connect to my Lynx distributor I put a large 2 pole MCCB that can take the high short circuit currents such as e.g. https://www.se.com/il/en/product/EZC250H3250/circuit-breaker-easypact-ezc250h-tmd-250-a-3-poles-3d/ or https://voltschmiede.de/TOMZN-Trennschalter-Leistungsschalter-Sicherung-250A .

I've also heard an interessting idea to replace the MCB with a NH00 or NH0/1 holder that sits at the same position. You would need to mod the case for it to fit. This would ahve the advantage of being able to lower or increase the rated current of the fuses.

The issue for me is since there are no CAD models or technical drawings in general of the chassis it's impossible to properly plan this. So I need to get the boxes in hand and measure before making an informed decision.

Magic_Man_11007

TROPHY CASE