Canon LBP7660Cdn Manual page 51

(1) USB Connector (for USB devices)
(2) ACT Indicator (Yellow)
(3) LAN Connector
(4) LNK Indicator (Green)
Interior View
(1) Y (Yellow) Toner Cartridge Slot
(2) M (Magenta) Toner Cartridge Slot
(3) C (Cyan) Toner Cartridge Slot
Multi-purpose Tray
(5) USB Connector (for connecting to computer)
(6) Ventilation Slots
(7) Lift Handles
(8) Power Socket
(4) K (Black) Toner Cartridge Slot
(5) Toner Cartridge Tray
(9) Back Cover
(10) Rating Label