261ms URB    39  vc control  0x40 0x0c 0x83 0x00 len     1 wrote 0x6d      dir:write type:vendor recipient:device req:non-std
      261ms URB    40  vc control  0xc0 0x0c 0x84 0x00 len     1 read  0x0f      dir:read  type:vendor recipient:device req:non-std