The pi4 has a native pcie slot and there are nvme hats that take advantage of this to mount nvme drives to this pcie bus.
On Fri, May 31, 2024, 7:50 PM Jim via PLUG-discuss < plug-discuss@lists.phxlinux.org> wrote: > I have a Raspberry Pi4 and I've had trouble with some adapters for some > sata ssds I've tried using with it. I have several usb3 adapters that > don't support uasp. When I try using one, the speeds are slow and I get > lots of errors. I looked this up online and everything I saw about it > said that some usb3 ssd adapters don't support uasp and a system trying > to use it will get slow speeds and lots of errors. Some of the stuff I > read says how to get the manufacturer and model id numbers and put them > in /boot/firmware/cmdline.txt so the system will not try using uasp with > those devices. In the cmdline.txt file on my Pi4, I have the following > at the front of cmdline.txt: > > usb-storage-quirks-152d:0578:u (152d:0578 is the manufacturer and > device numbers for the device in question.) > > This is supposed to tell the system not to use uasp on the specified > device. I tried that, and rebooted the pi, but still have the problem. > The only way I got it working was to plug the second drive into a usb2 > port. It's a bit slower, but works. > > Here it told how to identify the device and how to modify cmdline.txt to > tell the system not to use uasp with the device > https://forums.raspberrypi.com/viewtopic.php?t=245931 > > The cmdline.txt file starts with usb-storage-quirks-152d:0578:u > > Typing lsusb identifies the device. > > $ lsusb > Bus 002 Device 002: ID 14b0:0206 StarTech.com Ltd. Vi550 S3 This one > works. The drive the pi boots from is connected to it. > > Bus 001 Device 003: ID 152d:0578 JMicron Technology Corp. / JMicron USA > Technology Corp. JMS578 SATA 6Gb/s This is the one I'm having trouble with. > > It does not work without lots of errors. I only got it working by > putting it in a usb2 port. Is there any way to test whether or not a > device supports uasp? > > Thanks for any help you can send my way. > > --------------------------------------------------- > PLUG-discuss mailing list: PLUG-discuss@lists.phxlinux.org > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss >
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