Brother QL-700 - Manual (Page 36)

End point 1 In bulk (Sends the status from the unit to the computer.)
Maximum packet size: 16 bytes
End point 2 Out bulk (Sends print commands and data from the
computer to the unit.)
Maximum packet size: 64 bytes
With the mass storage class
(QL-700 only)
Power supply Self-powered
End point 1 Out bulk (Sends print commands and data from the
computer to the unit.)
Maximum packet size:
64 bytes
End point 2 In bulk (Sends the status from the unit to the computer.)
Maximum packet size:
64 bytes
Brother QL-500/550/560/570/580N/650TD/700/1050/1060N Command Reference
35