| A4. |
For scanners with a SCSI interface, the following kinds of PCs can be used.

- PC/AT 100% compatible machine with ISA or PCI bus
- DOS/V Laptop PC with PC card slot (PCMCIA)
For scanners with a USB interface, you need a PC that supports one of the following USB host controller chips. However, some PCs may not work properly due to their unique design specifications and working environments.

- Intel 82371 AB/EB PCI to USB Universal Host Controller
- Intel 82371 SB PCI to USB Universal Host Controller
- Intel 82801 AA USB Universal Host Controller
- Intel 82440MX PCI to USB Universal Host Controller
- Sis 7001 USB Open Host Controller
- VIA USB Universal Host Controller
- NEC USB Open Host Controller
- AMD 750 PCI to USB Open Host Controller
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