Ricoh M281 Series Service Manual page 135

2.9 INTERNAL OPTIONS
2.9.1 LIST OF SLOTS
Slot
[A] I/F slot
*1
[B] USB ports
*1 There is no difference between the left and right USB ports.
*2 MP 501/601 only
SM
USB Device Server Option Type M19
IEEE 1284 Interface Board Type M19
IEEE 802.11 Interface Unit Type M24
Extended USB Board Type M19
File Format Converter Type M19
Bluetooth Interface Unit Type D
2-107
Option
*2
*2
D255/D256/M281/M282
Internal Options