virtualbox-ose-4.3.16 USB passthrough does not work

[Miroslav Lachman]

Hi,
I have virtualbox-ose-4.3.16 and virtualbox-ose-kmod-4.3.16 installed on 
my PC-BSD (FreeBSD 10.1-RELEASE-p8 amd64 GENERIC). I tried to connect DJ 
mixer Rane TTM57SL and pass it's USB device (Serato sound card + special 
HID) to VBox guest Windows 7 Ultimated 32bit.

I correctly set the USB filter, started the VM and then got following error:

Failed to attach the USB device Serato TTM57SL to the virtual machine 
Windows 7 Ultimate 32 bit.

Failed to create a proxy device for the USB device. (Error: 
VERR_READ_ERROR).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}


VBoxManage lists the device (the last one):

# VBoxManage list usbhost
Host USB Devices:

UUID:               dc25c3c2-88b4-422a-a195-c13dfba58a6c
VendorId:           0x045e (045E)
ProductId:          0x0047 (0047)
Revision:           0.0 (0000)
Port:               0
USB version/speed:  0/1
Manufacturer:       Microsoft
Product:            Microsoft 5-Button Mouse with IntelliEyeTM
Address:            /dev/ugen1.3
Current State:      Busy

UUID:               f9613731-eb1c-41a1-a516-86707a4e596a
VendorId:           0x067b (067B)
ProductId:          0x2305 (2305)
Revision:           0.0 (0000)
Port:               0
USB version/speed:  0/1
Manufacturer:       vendor 0x067b
Product:            IEEE-1284 Controller
Address:            /dev/ugen2.3
Current State:      Busy

UUID:               1c22de78-a318-4830-be8d-f6aecd0f3617
VendorId:           0x13e5 (13E5)
ProductId:          0x0003 (0003)
Revision:           0.0 (0000)
Port:               0
USB version/speed:  0/1
Manufacturer:       Serato
Product:            TTM57SL
SerialNumber:       TTM.01.00
Address:            /dev/ugen1.4
Current State:      Held


Device permissions are OK:

# ls -l /dev/ugen1.4
lrw-rw-rw-  1 root  wheel  9 Feb  9 18:33 /dev/ugen1.4 -> usb/1.4.0

VirtualBox is running as root.

Is USB passthrough supported on this version of VirtualBox?

Should I have some special settings on host to allow this device for 
VBox guest?

Miroslav Lachman