In case you're wondering, the JMicron NVME to USB adapter receives power from the BMPCC4K but never shows up as Media no matter how many 3rd party cable swaps or gender changes attempted (Apple cable, expensive cable, cheap cable, USB C 3.1 to A to C back again), as opposed to a simple Startech USB to Sata SSD adapter which simply works with far slower SATA SSD media.

It works on PC well enough.

Let's hope Blackmagic Design issues a firmware update soon to accept NVME external drives via USB...

Further info on JMicron's JMS583 USB 3.1 Gen 2 to PCIe Gen3 x2 bridge controller:

offers data transfer speeds up to 10Gbps, double the transfer rate of USB 3.1 Gen 1 (USB 3.0).

supports TRIM command for SSD and complies with both of USB Mass Storage Class Bulk-Only Transport (BOT) and USB Attached SCSI Protocol (UASP), maximizing the performance of any PCIe NVMe SSD used

backward compatible with USB 3.0 (USB 3.1 Gen 1) and USB 2.0 devices at their respective data transfer rates.

Fully Bus-Powered & Plug and Play allowing access to your files from any USB compliant notebook or device with a hot-swappable plug and play enclosure adapter

No additional drivers or software required

@Vitaliy_Kiselev Blackmagic was supposed to publish a list of approved media by now, which isn't yet published, and I did contact support prior to posting this...

A responsive firmware update could potentialy open up options for a plethora of NVME drive options for this cam and settle the multiple issues with dropped frames many users are experiencing across the boards, myself included. NVME drives easily could saturate the USB C bus on the cam and end the debate about why the cams or media are dropping RAW frames inconsistently.

The T5 Samsung also does not support all framerates reliably, so I am at a loss of options now. If MiniDV format had so many dropouts depending on tape vendor upon first release, it would have been dropped like a hot potato.

I am hopeful they release the final approved media list ASAP or firmware updates, as this would have been a potential final solution to eliminate the reliable media Write Speed dilemna many are facing...

@Vitaliy_Kiselev Absolutely, uncompressed RAW recording is no easy task, as you need a high quality SSD drive with sufficient buffer and uncompressed data write speed, hopefully in excess of the USB 3.1 gen 1 bus the camera has, and that doesn't quickly thermally throttle, hence why I started my analysis with the widely available Samsung 970 Evo 500GB NVME drive as a baseline so it could be readily compared directly to their own external T5 Samsung 500GB used in BMD's own demos and advertising. That way, we don't have to worry about lot variation and changing memory/controller sources unlike with 2nd tier SSD makers, and the Samsung updates their SSD firmware also.

If Blackmagic wants to do what others have done, they could release a custom firmware for the Samsung drives to tweak/tune their read/write performance for use with their cams...

While BRAW sounds promising and would possibly solve some of the media issues, the cameras are shipping now so we can only go off what's happening now and you are certainly right abut the heat, if you also use the AC adaptor for a while and go to remove the metal connector from the camera body, mine's pretty damn hot...

@NickBen

Your setup with all this cables is extremely prone to failure.

You can check this one

https://www.amazon.com/gp/product/B078STRHBX/

@NickBen

What you mean with this video of two idiots staged fight for another idiots who watch such shit?

BMD just released the tested USB C list of SSD and other media, quite weird the Samsung Portable SSD T5 500GB and Sandisk Extreme Portable SSD 1TB didn't make the cut for RAW, and NOTHING (SSD, CF or SD) is approved for uncompressed 4K 60p RAW yet, plus none of the SSD appear to be NVME based at first glance...

The following USB‑C drives are recommended for 4K DCI Lossless RAW up to 30 fps. Angelbird SSD2GO PKT 512GB Angelbird SSD2GO PKT 2TB WISE Portable SSD 256GB WISE Portable SSD 512GB Samsung Portable SSD T5 1TB

The following USB‑C drives are recommended for 4K DCI 3:1 RAW up to 60 fps. Angelbird SSD2GO PKT 512GB Angelbird SSD2GO PKT 2TB WISE Portable SSD 256GB WISE Portable SSD 512GB Samsung Portable SSD T5 500GB Samsung Portable SSD T5 1TB

The following USB‑C drives are recommended for 4K DCI ProRes HQ up to 60 fps Angelbird SSD2GO PKT 512GB Angelbird SSD2GO PKT 2TB Glyph Atom 500GB Samsung Portable SSD T5 500GB Samsung Portable SSD T5 1TB Sandisk Extreme Portable SSD 1TB WISE Portable SSD 256GB WISE Portable SSD 512GB

At least it's finaly a starting point to rule out media related drop-out issues we've seen...