Brother MFC-7820N - Manual (Page 144)

S - 6
Interfaces
Note
Your MFC has a USB 2.0 Full-speed interface. This interface is compatible with USB 2.0
Hi-Speed; however, the maximum data transfer rate will be 12 Mbits/s. The MFC can also be
connected to a computer that has a USB 1.1 interface.
Please make sure you use a USB 2.0 interface cable that is no longer than 6 feet (2.0 m).
Interface Recommended Cable
Parallel A bi-directional shielded parallel cable that is IEEE 1284 compliant and
no longer than 6 feet (2.0 m).
USB A USB 2.0 interface cable that is not longer than 6 feet (2.0 m).
LAN cable (MFC-7820N only) Ethernet UTP cable category 5 or greater.
(Cables are not included.)