| Slot | Option | |
|---|---|---|
| [A] | USB ports *1 | External Keyboard Bracket Type M19 |
| Smart Card Reader Built-in Unit Type M29 | ||
| [B] | I/F slot A | IEEE 1284 Interface Board Type M19 |
| IEEE 802.11a/g/n Interface Unit Type M19 | ||
| File Format Converter Type M19 | ||
| USB Device Server Option Type M19 | ||
| Extended USB Board Type M19 | ||
*1 There is no difference between the left and right USB ports.