Ignore this. After testing a number of cables I tested a (very) short cable that came with the caddy and it DID connect at full speed. On 30/1/25 11:58, Eyal Lebedinsky wrote:
$ uname -a Linux e7.eyal.emu.id.au 6.12.10-100.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Jan 17 18:03:20 UTC 2025 x86_64 GNU/Linux I have a USB-C PCIe card that can run at 10Gbps. When I connect an nvme disk it connects at 480M. ## no disk plugged into this card: $ lsusb -tv /: Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 480M ID 1d6b:0002 Linux Foundation 2.0 root hub /: Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 20000M/x2 ID 1d6b:0003 Linux Foundation 3.0 root hub ## now I plug in the USB-C caddy: /: Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 480M ID 1d6b:0002 Linux Foundation 2.0 root hub |__ Port 001: Dev 006, If 0, Class=Mass Storage, Driver=usb-storage, 480M <<< ID 0bda:9210 Realtek Semiconductor Corp. RTL9210 M.2 NVME Adapter <<< the caddy /: Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 20000M/x2 ID 1d6b:0003 Linux Foundation 3.0 root hub It connects at 480M rather than the max for it (10G). $ sudo hdparm -t /dev/sdi /dev/sdi: Timing buffered disk reads: 100 MB in 3.03 seconds = 33.00 MB/sec ## using a USB-3.0 to USB-C cable connects at 5000M: $ sudo hdparm -t /dev/sdi /dev/sdi: Timing buffered disk reads: 1276 MB in 3.11 seconds = 410.77 MB/sec $ lsusb -tv /: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/10p, 10000M ID 1d6b:0003 Linux Foundation 3.0 root hub |__ Port 007: Dev 006, If 0, Class=Mass Storage, Driver=uas, 5000M <<< ID 0bda:9210 Realtek Semiconductor Corp. RTL9210 M.2 NVME Adapter <<< the caddy I remember it connecting at full speed in the past. Also tested on another computer and measured 1010MB/sec, so the caddy seems good. What information will show the decisions the drivers made? TIA
-- Eyal at Home (eyal@xxxxxxxxxxxxxx)
