Date: Thu, 18 Jan 2024 13:26:34 +0000 From: Gary Jennejohn <garyj@gmx.de> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-usb@freebsd.org Subject: Re: USB key is 2.0 or 3.0 Message-ID: <20240118142634.69f7d675@ernst.home> In-Reply-To: <ZakiueSm0dPskpSr@pureos> References: <ZakiueSm0dPskpSr@pureos>
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On Thu, 18 Jan 2024 14:08:09 +0100 Matthias Apitz <guru@unixarea.de> wrote: > Hello, > > I will move this topic to freebsd-usb@ > > I bought a new USB 3.0 key with very poor write performan and the > question is if the key is really USB 3.0: > > ----- Forwarded message from Matthias Apitz <guru@unixarea.de> ----- > > El d=EDa jueves, enero 18, 2024 a las 02:43:23 +1100, Ian Smith escribi= =F3: > > > From your first post: > > > > > Jan 16 17:50:52 c720-1400094 kernel: da0: 40.000MB/s transfers > > > Jan 16 17:50:52 c720-1400094 kernel: da0: 120000MB (245760000 512 b= yte sectors) > > I checked older /var/log/messages and other external USB disks have > 400.000MB/s. So it is not the port of the laptop. > > I run on my Linux phone a lsusb command which shows: > > $ lsusb -v -d 058f:6387 > Bus 003 Device 002: ID 058f:6387 Alcor Micro Corp. Flash Drive > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.10 > bDeviceClass 0 > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x058f Alcor Micro Corp. > idProduct 0x6387 Flash Drive > bcdDevice 0.02 > iManufacturer 1 Generic > iProduct 2 Mass Storage > iSerial 3 A430786F > ... > > I interpret 'bcdUSB 2.10' as an indicator of USB 2.10. The key is new > and its wrapping says USB 3.0. > I plugged a Intenso USB3 stick into a USB3 port and got this: bcdUSB =3D 0= x0320 I then plugged it into a USB2 port and got this: bcdUSB =3D 0x0210 Note that I executed usbconfig -v -d ugenX.Y in both cases. So, I suspect that your Linux phone might only support USB2. =2D- Gary Jennejohn
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