Where are my Brother machine's USB and Ethernet ports?
USB cable specifications
Brother MFC-J5910DW - Multifunction printer - color - ink-jet - Legal (8.5 in x 14 in) (original) - Ledger (media) - up to 6 ppm (copying) - up to 12 ppm (printing) -
Brother INK JET 系列USB PORT位置- YouTube
How to Connect USB Cable to Printer - YouTube
Brother MFC-J5910DW Color Inkjet MFP, New (MFC-J5910DW)-E013