| Physical Characteristics | 
Dimensions | 
162 mm (w) x 85 mm (d) x 15 mm (h) | 
| Weight | 
125g | 
| Power Characteristics | 
Voltage In | 
6 - 9 V unregulated (With Linear Regulator)
 9 - 24 V (With Switching Regulator) | 
| Voltage Out | 
5 V DC  | 
| Current M301 only | 
80 mA | 
| Current Total * | 
500 mA (With Linear Regulator)
 800 mA (With Switching Regulator) | 
| Memory | 
ROM | 
32 kbytes | 
| Flash | 
8 kbytes | 
| RAM | 
32 kbytes | 
| Interfaces | 
Keyboard Input | 
1, 5 Pin Din | 
| Keyboard Output | 
1, 7 Pin Din (To Host - Including Power Input) | 
| Serial | 
2, DB9 (Upto 6 via 2 I/O boards on Protolink Bus) | 
| Wand | 
1, AMP9 Squeeze | 
| Magnetic Card | 
1, PCB Pin Connector | 
| Parallel | 
0, DB25 (Upto 2 via 2 I/O boards on Protolink Bus) | 
| Cash Drawer | 
0, Din 5 240º (Upto 2 via 2 I/O boards on Protolink Bus) | 
| Protolink Bus | 
1, PCB Pin Connector |