Recommendations for an NVMe drive that works well with the CM4?
I run a CM4 with a WD Red SN700.
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Kioxia KBG50ZNS256G 256GB 2230 NVMe M.2 ā 15 GBP delivered at CEX uk.
cheap, very low power draw in idle, runs cool, ex laptop/ tablet OEM storage. gen3, sustained read/write at 400mb/s on uconsole PCIE -set to 1x.
ive put a second one on a USB enclosure inside the case, connected to free USB-C port on the hacker gadgets board. only 30mb/s. but still better than the micro SD that does 5mb/s -both sustained read/write speeds.
ps. CM4 here. all USB are 2.0
what speeds do other people report on their NVME PCIE drives?
CM5ā¦
90.0Mb/s read from a Sandisk Extreme Pro 1tb microSD in the back slot !
WD SN740 256Gb Nvme in the Hackergadget battery board set to pciex1_gen2 gives 471.7Mb/s read.
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yeah, i read on hacker gadgets site, my uconsole is stuck at usb 2.0 due to cm4 and me being cheap. i mean frugal. but wait no, the internal usb-c is 2.0 by default. so the 90mb/s in your case is due to only the card and the reader
I have a Silicon Power P34A60 256GB drive awaiting the arrival of the appropriate hardware from HG. Fingers crossed that it does The Thing. 
Iāve also upgraded from CM4 4GB to CM5 16GB. The performance is considerably better. But it points and laughs at the 2x2000mAh 18650ās powering it right now. Again, once my hardware from HG arrives, Iāll be swapping those out for a 10Ah LiPo battery, though Iāve been considering getting a second one just like the first and wiring them in parallel to bump the system up to 20Ah or whatever portion of it is useful before the voltage drop forces a power down.
Tinkering is so much fun.
Question to all owners of AIOv2 and CM5.
Does your GPS actually turns off? Iāve wast discussing in another topic, however I need some confirmation from any other owner of these.
My uconsole doesnāt shutdown GPS at all - itās always active. When I pull GPIO27 high, it lowers the consumption by about 0,3-0,5w instead.
If pyGPS (or simple listing on uart) are running - I have GPS always providing output.
2x 4000Mah 18650 in mine, working well !
Yeah, Iād have gone for ābiggerā 18650s but I didnāt order them and wanted to play with my new toy the day it arrived, so I got the 2000mAh batteries locally. I didnāt replace them but now with the CM5 they just donāt let it run for very long. No big deal since Iām not really full-on āplayingā with the device yet, but Iāll be glad when I can upgrade to a big flatpack LiPo (or two).
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It should be poweroff when GPIO27 is off. Otherwise, you can contact shop@hackergadgets.com for a replacement.
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So far I had no reply.
However, Iāve analyzed whole thing - it seems like thereās an LDO or Diode on VRF input, that backfeeds 4,7 V through whole GPS module. Once removed, I can sucessfuly disable GPS (no output, 0 on VCC rail) and antenna in GPS output says āANTENNA OKā. Previously I had it as āANTENNA OPENā.
That component was used to power the GPS antenna individually. But it was only soldered to the PCB for pre-production testing. All production boards come without it. The pre-production board may have gotten mixed in during the packing process.