Announcement

**synack** · 01-18-2013, 09:49 AM

Re: USB 3.0 External drive not transfering data at superspeed.

Wow there could be soo many variables here. are all the correct kernel modules/drivers loaded for that USB3 card?
An add-in card would still require USB3 support enabled in the kernel regardless of it being an addin or not. The difference in speed is about the difference in USB 2 vs USB 3. Something tells me its the USB 3 support.

to save you some trouble I believe the USB3 module is xhci_hcd
if a "lsmod | grep xhci_hcd" returns nothing, run "modprobe xhci_hcd"

if that works, make sure that module is not commented out wherever that is configured in Ubuntu. (sorry, i'm a gentoo guy and I don't know off hand where Ubuntu keeps that stuff) Might be /etc/modules.conf or in the folder /etc/modprobe.d.. but those are guesses based on other distros lol/

lsusb should also give you some hints. for instance my usb hubs shows up as:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

If you dont have a 3 in there... you dont have usb 3 support installed.

Syn

**synack** · 01-18-2013, 09:58 AM

Re: USB 3.0 External drive not transfering data at superspeed.

OH just thought of another thing to check.. maybe first...

run lspci -k

This will list all the PCI devices and their drivers if applicable. for instance my usb3 shows up as:

00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
Subsystem: ASRock Incorporation Device 1e31
Kernel driver in use: xhci_hcd

**TonyLudwick** · 01-18-2013, 11:13 AM

Re: USB 3.0 External drive not transfering data at superspeed.

Thank You so much for repying.

It seems to be seeing the USB 3.0 Controllers and using xhci_hcd for a driver. I have even tried disabling USB 2.0 support on the MB. This is just nuts! Is there anything else I could check?

lsmod | grep xhci_hcd got no output.
modprobe xhci_hcd got no output.

lsusb returned the following:

root@AntecNas1:/# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp.

lspci -k retuned the following:

root@AntecNas1:/# lspci -k
00:00.0 Host bridge: Advanced Micro Devices [AMD] nee ATI RD890 Northbridge only single slot PCI-e GFX Hydra part (rev 02)
Subsystem: Advanced Micro Devices [AMD] nee ATI RD890 Northbridge only single slot PCI-e GFX Hydra part
00:02.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (PCI express gpp port B)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:04.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (PCI express gpp port D)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:05.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (PCI express gpp port E)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:06.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (PCI express gpp port F)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:09.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (PCI express gpp port H)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:0a.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (external gfx1 port A)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:0b.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RD890 PCI to PCI bridge (NB-SB link)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:11.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40)
Subsystem: ASRock Incorporation Device 4391
Kernel driver in use: ahci
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 42)
Subsystem: ASRock Incorporation Device 4385
Kernel driver in use: piix4_smbus
Kernel modules: sp5100_tco, i2c-piix4
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
Subsystem: ASRock Incorporation Device 2892
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
Subsystem: ASRock Incorporation Device 439d
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge (rev 40)
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor DRAM Controller
Kernel modules: amd64_edac_mod
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Miscellaneous Control
Kernel driver in use: k10temp
Kernel modules: k10temp
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Link Control
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 8400 GS] (rev a2)
Subsystem: eVga.com. Corp. Device 1300
Kernel driver in use: nouveau
Kernel modules: nouveau, nvidiafb
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
Subsystem: eVga.com. Corp. Device 1300
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
02:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9120 SATA 6Gb/s Controller (rev 12)
Subsystem: ASRock Incorporation Device 9120
Kernel driver in use: ahci
03:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03)
Subsystem: ASRock Incorporation Device 0194
Kernel driver in use: xhci_hcd
04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03)
Subsystem: ASRock Incorporation Device 0194
Kernel driver in use: xhci_hcd
05:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6315 Series Firewire Controller
Subsystem: ASRock Incorporation Device 3403
Kernel driver in use: firewire_ohci
Kernel modules: firewire-ohci
05:00.1 IDE interface: VIA Technologies, Inc. VT6415 PATA IDE Host Controller (rev a0)
Subsystem: ASRock Incorporation Device 0415
Kernel driver in use: pata_via
Kernel modules: pata_via
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: ASRock Incorporation Motherboard (one of many)
Kernel driver in use: r8169
Kernel modules: r8169
07:00.0 USB controller: Renesas Technology Corp. Device 0014 (rev 03)
Subsystem: Renesas Technology Corp. Device 0014
Kernel driver in use: xhci_hcd
08:05.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5700 Gigabit Ethernet (rev 12)
Subsystem: 3Com Corporation 3C996-T 1000Base-T
Kernel driver in use: tg3
Kernel modules: tg3

**synack** · 01-18-2013, 11:48 AM

Re: USB 3.0 External drive not transfering data at superspeed.

Hmm you mention it is a NEC chipset, but the add-on USB controller seems to be the Renesas Tech Corp (pci device 7). I assume the jmicron is the ata/sata device in question on usb bus 6?

can you post the verbose output of usb bus 6?:
lsusb -v -s 6

And also the verbose output of PCI device 7?
lspci -v -s 07:00

and the kernel boot log for the PCI device 7?

dmesg | grep 07:00

and finally the kernel's usb device detection

dmesg | grep "usb "
UPDATE (note there is an intentional space between b and the quote)

Syn

**synack** · 01-18-2013, 11:54 AM

Re: USB 3.0 External drive not transfering data at superspeed.

DOH! i just read that you said modprobe xhci_hcd got no output... that is GOOD. error is bad or "already loaded" is bad.

if you rerun lsmod | grep "xhci_hcd" it should now have output

recheck your speed

**synack** · 01-18-2013, 12:06 PM

Re: USB 3.0 External drive not transfering data at superspeed.

As a side note, I see you are using the open source nouveau driver for your nvidia card. May I suggest you install the proprietary nvidia driver? (which should be easily available via the ubuntu package manager)

I run the current nvidia supplied linux driver and the OpenGL on it rivals directx 11. This depends on the application supporting OpenGL of course. I run windows games under wine (which still only supports dx9) and get AMAZING performance. For example, I run Lord of the Rings Online with my gtx 680 at 1920x1200 full screen and "very high" graphics settings with always more than 30 fps, and very smooth. I can also get around 30 fps at "ultra high" graphics settings with the occasional stutter.

I have nothing against the Open Source driver, and commend those guys for even making it. But the nvidia driver is just that much better I'll ignore that fact it's closed source. (and technically "taints" the kernel)

**TonyLudwick** · 01-18-2013, 12:20 PM

Re: USB 3.0 External drive not transfering data at superspeed.

lsmod | grep "xhci_hcd still has no output. Also, I do believe that the Renesas Technology Corp USB 3.0 controller is the one that is on the MB. I get the same speed from both. Thanks for the tip on the NVidia Driver. I prefer it as well for my desktop. This machine however, doesn't have a desktop installed. We are using it as a high performance NAS.

root@AntecNas1:/# lsusb -v -s 6 - No output.

root@AntecNas1:/# lspci -v -s 07:00
07:00.0 USB controller: Renesas Technology Corp. Device 0014 (rev 03) (prog-if 30 [XHCI])
Subsystem: Renesas Technology Corp. Device 0014
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at fe200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [90] MSI-X: Enable+ Count=8 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [150] Latency Tolerance Reporting
Kernel driver in use: xhci_hcd

root@AntecNas1:/# dmesg | grep 07:00
[ 0.456124] pci 0000:07:00.0: [1912:0014] type 0 class 0x000c03
[ 0.456148] pci 0000:07:00.0: reg 10: [mem 0xfe200000-0xfe201fff 64bit]
[ 0.456269] pci 0000:07:00.0: PME# supported from D0 D3hot D3cold
[ 0.456274] pci 0000:07:00.0: PME# disabled
[ 0.497006] pci 0000:07:00.0: PCI INT A -> GSI 32 (level, low) -> IRQ 32
[ 0.497036] pci 0000:07:00.0: PCI INT A disabled
[ 0.848104] xhci_hcd 0000:07:00.0: PCI INT A -> GSI 32 (level, low) -> IRQ 32
[ 0.848134] xhci_hcd 0000:07:00.0: setting latency timer to 64
[ 0.848138] xhci_hcd 0000:07:00.0: xHCI Host Controller
[ 0.848232] xhci_hcd 0000:07:00.0: new USB bus registered, assigned bus number 5
[ 1.129608] xhci_hcd 0000:07:00.0: irq 32, io mem 0xfe200000
[ 1.129648] xhci_hcd 0000:07:00.0: irq 83 for MSI/MSI-X
[ 1.129652] xhci_hcd 0000:07:00.0: irq 84 for MSI/MSI-X
[ 1.129657] xhci_hcd 0000:07:00.0: irq 85 for MSI/MSI-X
[ 1.129661] xhci_hcd 0000:07:00.0: irq 86 for MSI/MSI-X
[ 1.129664] xhci_hcd 0000:07:00.0: irq 87 for MSI/MSI-X
[ 1.129938] xhci_hcd 0000:07:00.0: xHCI Host Controller
[ 1.130001] xhci_hcd 0000:07:00.0: new USB bus registered, assigned bus number 6

root@AntecNas1:/# dmesg | grep "usb "
[ 1.444953] usb 6-4: new SuperSpeed USB device number 2 using xhci_hcd

**synack** · 01-18-2013, 12:48 PM

Re: USB 3.0 External drive not transfering data at superspeed.

Ok this is what I see:

PCI device 07:00

07:00.0 USB controller: Renesas Technology Corp. Device 0014 (rev 03)
Subsystem: Renesas Technology Corp. Device 0014
Kernel driver in use: xhci_hcd

is USB BUS 6

[ 1.130001] xhci_hcd 0000:07:00.0: new USB bus registered, assigned bus number 6

And the external drive is on bus 6 device 2

Bus 006 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp.

and that drive is detected as USB 3

[ 1.444953] usb 6-4: new SuperSpeed USB device number 2 using xhci_hcd

The has to be another issue going on here.
Possibly there is some compatibility issue with the distribution of devices. Can you please try one of the motherboards built in USB3 ports to see if that helps?

**synack** · 01-18-2013, 01:00 PM

Re: USB 3.0 External drive not transfering data at superspeed.

btw, oops sorry about the lsusb...
it should have read:
lsusb -v -s 6:

but I don't think its necessary anymore.

**TonyLudwick** · 01-18-2013, 01:44 PM

Re: USB 3.0 External drive not transfering data at superspeed.

We tried the built in USB 3.0 ports already and got the same results.

root@AntecNas1:/# lsusb -v -s 6:

Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 3
bMaxPacketSize0 9
idVendor 0x1d6b Linux Foundation
idProduct 0x0003 3.0 root hub
bcdDevice 3.02
iManufacturer 3 Linux 3.2.0-35-generic xhci_hcd
iProduct 2 xHCI Host Controller
iSerial 1 0000:07:00.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 31
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
bMaxBurst 0
Hub Descriptor:
bLength 12
bDescriptorType 42
nNbrPorts 4
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
bHubDecLat 0.0 micro seconds
wHubDelay 0 nano seconds
DeviceRemovable 0x00
Hub Port Status:
Port 1: 0000.02a0 5Gbps power Rx.Detect
Port 2: 0000.02a0 5Gbps power Rx.Detect
Port 3: 0000.02a0 5Gbps power Rx.Detect
Port 4: 0000.0203 5Gbps power U0 enable connect
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 15
bNumDeviceCaps 1
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
Latency Tolerance Messages (LTM) Supported
wSpeedsSupported 0x0008
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 3
Lowest fully-functional device speed is SuperSpeed (5Gbps)
bU1DevExitLat 0 micro seconds
bU2DevExitLat 0 micro seconds
Device Status: 0x0001
Self Powered

Bus 006 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
idProduct 0x0551
bcdDevice 1.00
iManufacturer 1 JMicron
iProduct 2 USB to ATA/ATAPI Bridge
iSerial 5 1F0FFFFFFFFF
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 44
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 42
bNumDeviceCaps 3
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
Latency Tolerance Messages (LTM) Supported
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 32 micro seconds
Container ID Device Capability:
bLength 20
bDescriptorType 16
bDevCapabilityType 4
bReserved 0
ContainerID {00010203-0405-0607-0800-000000000000}
Device Status: 0x0001
Self Powered

**synack** · 01-18-2013, 02:04 PM

Re: USB 3.0 External drive not transfering data at superspeed.

Yep confirmed, the hub and the device and drivers all support superspeed 5Gb transfers, and the jmicron is connected with USB3

next layer is the SCSI transport.

is it possible for you to disconnect the external storage for a minute, and then plug it back in?
If so can you run this command first and leave it running during the disconnect, reconnect:
tail -n 0 -f /var/log/messages
and post the output.

(ctrl-c exits the command above)

this will give us some more info on the USB connection as well as the initial scsi connection.

**TonyLudwick** · 01-18-2013, 03:20 PM

Re: USB 3.0 External drive not transfering data at superspeed.

I get an error when trying to do this. See below:

root@AntecNas1:/# tail -n 0 -f /var/log/messages
tail: cannot open `/var/log/messages' for reading: No such file or directory

Can I point this somewhere else instead?

**synack** · 01-18-2013, 04:21 PM

Re: USB 3.0 External drive not transfering data at superspeed.

UGH ubuntu... Every linux in the known world has /var/log/messages... ubuntu decided to make it /var/log/syslog in v11 (natty)

sigh... linux is hard enough to learn, for people to make dumb decisions like that to make it harder. sheesh

so use tail -n 0 -f /var/log/syslog instead

Syn

**TonyLudwick** · 01-18-2013, 04:33 PM

Re: USB 3.0 External drive not transfering data at superspeed.

See output below:

root@AntecNas1:/# tail -n 0 -f /var/log/syslog
Jan 18 16:24:46 AntecNas1 kernel: [20578.512300] usb 6-4: USB disconnect, device number 2
Jan 18 16:25:22 AntecNas1 kernel: [20614.452141] hub 5-0:1.0: unable to enumerate USB device on port 4
Jan 18 16:25:22 AntecNas1 kernel: [20614.672983] usb 6-4: new SuperSpeed USB device number 3 using xhci_hcd
Jan 18 16:25:22 AntecNas1 kernel: [20614.694755] scsi11 : usb-storage 6-4:1.0
Jan 18 16:25:23 AntecNas1 kernel: [20615.694196] scsi 11:0:0:0: Direct-Access ST3000DM 001-9YN166 PQ: 0 ANSI: 5
Jan 18 16:25:23 AntecNas1 kernel: [20615.696562] sd 11:0:0:0: Attached scsi generic sg9 type 0
Jan 18 16:25:23 AntecNas1 kernel: [20615.697703] sd 11:0:0:0: [sdi] Very big device. Trying to use READ CAPACITY(16).
Jan 18 16:25:23 AntecNas1 kernel: [20615.698305] sd 11:0:0:0: [sdi] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
Jan 18 16:25:23 AntecNas1 kernel: [20615.700102] sd 11:0:0:0: [sdi] Write Protect is off
Jan 18 16:25:23 AntecNas1 kernel: [20615.700113] sd 11:0:0:0: [sdi] Mode Sense: 28 00 00 00
Jan 18 16:25:23 AntecNas1 kernel: [20615.701992] sd 11:0:0:0: [sdi] No Caching mode page present
Jan 18 16:25:23 AntecNas1 kernel: [20615.702028] sd 11:0:0:0: [sdi] Assuming drive cache: write through
Jan 18 16:25:23 AntecNas1 kernel: [20615.702908] sd 11:0:0:0: [sdi] Very big device. Trying to use READ CAPACITY(16).
Jan 18 16:25:23 AntecNas1 kernel: [20615.706475] sd 11:0:0:0: [sdi] No Caching mode page present
Jan 18 16:25:23 AntecNas1 kernel: [20615.706508] sd 11:0:0:0: [sdi] Assuming drive cache: write through
Jan 18 16:25:23 AntecNas1 kernel: [20615.750996] sdi: sdi1 sdi2
Jan 18 16:25:23 AntecNas1 kernel: [20615.752130] sd 11:0:0:0: [sdi] Very big device. Trying to use READ CAPACITY(16).
Jan 18 16:25:23 AntecNas1 kernel: [20615.755665] sd 11:0:0:0: [sdi] No Caching mode page present
Jan 18 16:25:23 AntecNas1 kernel: [20615.755702] sd 11:0:0:0: [sdi] Assuming drive cache: write through
Jan 18 16:25:23 AntecNas1 kernel: [20615.755724] sd 11:0:0:0: [sdi] Attached SCSI disk

Announcement

USB 3.0 External drive not transfering data at superspeed.

USB 3.0 External drive not transfering data at superspeed.

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