Table 2-4. Electrical Specifications (continued) 1. Operating current requirements. Note Information for the 3,000-sheet Stapler/Stacker is located in the HP 3,000-sheet Stapler/Stacker Service Manual Supplement for Paper- Handling Accessories (C4788-90904). 88 Chapter 2 Site Requirements C4265-90907 Volts Frequency Amps1 Watts (average) 7-bin Tabletop Mailbox 120 Vac ± 10% 50/60 Hz ± 2 Hz 0.5 maximum 28 Watts Maximum 240 Vac ± 10% 50/60 Hz ± 2 Hz 0.3 maximum 28 Watts Maximum