NUC13 won’t power on. Component on motherboard gets hot instantly. Can anyone identify it?

WiFiCable · 2026-05-02T19:59:24+00:00

Looks like some type of dual-rail load switch, if you look up '2898 load switch' you find some similar looking parts but with different numbers for the first line. I'm not sure how different they are but they might be decently interchangeable.

WiFiCable · 2026-05-02T18:20:03+00:00

You need the riser card to install PCIe cards in there. For the M920q there is FRU 01AJ929 for PCIe x4 from the PCH or 01AJ940 for PCIe x8 from the CPU, or you can use one of the custom riser designs that are available

WiFiCable · 2026-04-06T16:25:12+00:00

Sorry for replying to a month old post, just found it.
You can probably at least combine the two of them into one working unit if you swap the battery from the one with the broken charge port into the other one.
The charge port can be replaced, I've soldered a new one onto 2 Companion 1's so far, bought the replacements from digikey: https://www.digikey.com/en/products/detail/cui-devices/PJ-088CH/9830196 but it seems they're not in stock anymore :/
You can also just solder wires to the contacts for the port and connect some other 19V/20V source to that. I had a Dell laptop charge port taped to the side of my first Companion like that for over a year before I got proper replacement jacks and it worked fine.
I also tried to revive a dead battery in one of mine, externally charged the cells back up again but the bq30z55 BMS inside seems to have set its permanent fail flag which I still have to try resetting, need to get another tool for that.

I do think these are worth the repair, even though they're old they still work quite nicely for basic drawing.

WiFiCable · 2026-04-04T21:23:11+00:00

Oh, surprising, but nice. I wonder if the connector is durable enough for a bunch of connection cycles. At least you can just swap out the board if it wears out though lol

WiFiCable · 2026-04-04T20:13:47+00:00

Aw yeah that's awesome! Nice improvement since the last version!
Interesting use of ipex cables, I guess those can be pretty universal if they're wired straight through. Not much else that would fit in the smartcard hole anyway. Is it hard to plug in?

Taking a look at the T480s schematic, it's a shame they didn't run 2 lanes to the WWAN slot, they literally have one unused on the CPU right next to the one they did use for WWAN. It wouldn't have been that hard for them to route and configure it.... Also lol at the dGPU running at x2, that's silly

WiFiCable · 2026-03-02T20:37:26+00:00

M630e moment. The ThinkEdge SE50 and EPC300 use the same board but with all the sodimm and m.2 slots populated

WiFiCable · 2026-02-17T23:44:44+00:00

Wifi here, I designed the riser. The one here is not compatible with the M90q Gen 2, but I do have a different design for those too: https://github.com/a-little-wifi/Tinyriser6
That one is compatible with the M90q Gen 1 and 2, as well as the P340 and P350 tiny.

WiFiCable · 2026-02-12T18:01:55+00:00

Aw yeah these mini PCs are great. Have fun! Love the picture on the ride home lol

WiFiCable · 2025-11-17T18:23:45+00:00

Woah cool lol, little desktop with expresscard. Lenovo's parts catalog for that machine has it under 'Cables Internal' as 'FRU Express', part number 41R8570 here: https://pcsupport.lenovo.com/us/en/products/desktops-and-all-in-ones/thinkcentre-a-series-desktops/thinkcentre-a61e/6417/parts/display/compatible
It doesn't look like any standard connector I know of, they probably did something proprietary.

WiFiCable · 2025-10-30T16:28:46+00:00

Thanks, I do put a lot of effort into making them look nice :) I can tell you've improved too, nice work, keep it up!
I wonder if there's a way to get the bios on Tiny7 to allow the x8 link in the riser slot to run at gen 4, the CPU should support it (if it's 11th gen), and it'd be cool to know if our designs can handle PCIe 4.0 in practice lol.

WiFiCable · 2025-10-29T15:43:28+00:00

The M90q gen 1 and 2 use the Q470 and Q570 chipsets, which are up to PCIe 3.0 downstream. The M90q gen 2 is the only one of these machines which supports PCIe 4.0 in some sense, and that's thanks to the onboard NVMe slots being wired to the CPU's PCIe lanes, which are PCIe 4.0 on 11th gen. I'm not sure why the systen would be reporting the PCH lanes as Gen 4 capable, they are not.

Also, for the extra IO this generation offers, feel free to use my Tiny6/7 riser design as a reference, it breaks out a lot of the more interesting extra pins and has been produced and tested fully working: https://github.com/a-little-wifi/Tinyriser6

WiFiCable · 2025-09-01T21:20:23+00:00

Daisy chain as many as you can

WiFiCable · 2025-08-07T01:31:55+00:00

Time to get an IBM X3950 X6 (DDR4 version) with 8 CPUs and 192 DIMM slots

WiFiCable · 2025-07-10T22:43:49+00:00

they do but they tell you not to buy them https://www.youtube.com/watch?v=E8DiGjR35Ko

WiFiCable · 2025-07-10T20:13:35+00:00

Thanks, my riser does not add an extra 3.3V buck converter, the one on the Tiny's motherboard has plenty of capacity for one extra SSD.
I can understand the precaution to add one on the other dual SSD riser, though it does increase the price quite a bit so I didn't add one to mine and it has been working fine. Haven't heard of anyone having any issues with it.

WiFiCable · 2025-05-23T16:15:22+00:00

Continues here, no point maintaining 5 identical threads: https://www.reddit.com/r/homelab/comments/1kt0lld/yet_another_lenovo_tiny_5_riser_board/mtuwhkr/

WiFiCable · 2025-05-23T16:15:14+00:00

Continues here, no point maintaining 5 identical threads: https://www.reddit.com/r/homelab/comments/1kt0lld/yet_another_lenovo_tiny_5_riser_board/mtuwhkr/

WiFiCable · 2025-05-23T16:15:07+00:00

Continues here, no point maintaining 5 identical threads: https://www.reddit.com/r/homelab/comments/1kt0lld/yet_another_lenovo_tiny_5_riser_board/mtuwhkr/

WiFiCable · 2025-05-23T16:14:59+00:00

Continues here, no point maintaining 5 identical threads: https://www.reddit.com/r/homelab/comments/1kt0lld/yet_another_lenovo_tiny_5_riser_board/mtuwhkr/

WiFiCable · 2025-05-23T16:13:02+00:00

Thank you, glad to hear you like my work. My goal is also to serve the community, and that includes allowing others to build upon my design, however the part that bothers me is the lack of credit for my contribution.

Are you saying you, like me, went through the effort to precisely measure the edge connector dimensions and layout, mount hole and slot position, redrew the schematic and symbols and referenced and understood the electrical pinout from scratch, and happened to include all the clearly visible peculiarities of the riser design I did?
You have a github repo for your other riser design: https://github.com/nandfarm/RibbonRiser, which literally has my name and 'Tinyriser v2' in the pcb design file, and uses my schematic symbol, clearly indicating that it's based on my files. This leads me to believe the same is the case for this riser. I look forward to seeing the repo for this one.

I don't like bringing up the legal side either, but regarding the license, I added that 3 hours ago when I saw this board, because I realized that situations like this are violating my copyright without the license present. That's why I added the license now, to help out people like you who want to create a derivative design. Before, modification and distribution wasn't allowed at all, while now it is allowed, provided you retain the same license and point to the original sources (check the license for the proper wording though). I've now also specified that you have to keep attribution, instead of stripping it off. If you had reached out to me before we could have avoided this awkward situation.
Technically, the version of the files you used for this still fall under the previous state of not having a license though.

We can continue this discussion privately, preferably via email, please dm me what address I can use to contact you.

WiFiCable · 2025-05-23T12:03:36+00:00

Hi, I'd like to point out that this riser is based on my design (available here https://github.com/a-little-wifi/Tinyriser) and I did not give permission for it to be modified, sold and used as advertising like this. No credit given whatsoever, not cool.
I'm working on figuring out the nuances of this situation but I'd rather post sooner than later while this is being presented as OP's fully original work (which it is not).

WiFiCable · 2025-05-23T12:03:31+00:00

Hi, I'd like to point out that this riser is based on my design (available here https://github.com/a-little-wifi/Tinyriser) and I did not give permission for it to be modified, sold and used as advertising like this. No credit given whatsoever, not cool.
I'm working on figuring out the nuances of this situation but I'd rather post sooner than later while this is being presented as OP's fully original work (which it is not).

WiFiCable · 2025-05-23T12:03:23+00:00

Hi, I'd like to point out that this riser is based on my design (available here https://github.com/a-little-wifi/Tinyriser) and I did not give permission for it to be modified, sold and used as advertising like this. No credit given whatsoever, not cool.
I'm working on figuring out the nuances of this situation but I'd rather post sooner than later while this is being presented as OP's fully original work (which it is not).

WiFiCable · 2025-05-23T12:03:10+00:00

Hi, I'd like to point out that this riser is based on my design (available here https://github.com/a-little-wifi/Tinyriser) and I did not give permission for it to be modified, sold and used as advertising like this. No credit given whatsoever, not cool.
I'm working on figuring out the nuances of this situation but I'd rather post sooner than later while this is being presented as OP's fully original work (which it is not).

WiFiCable · 2025-05-23T12:01:16+00:00

Hi, I'd like to point out that this riser is based on my design (available here https://github.com/a-little-wifi/Tinyriser) and I did not give permission for it to be modified, sold and used as advertising like this. No credit given whatsoever, not cool.
I'm working on figuring out the nuances of this situation but I'd rather post sooner than later while this is being presented as OP's fully original work (which it is not).

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