Visioneer Strobe XP 300 Sheetfed Scanner - 48-bit Color - 8-bit Grayscale - USB. The Visioneer Strobe XP 300 instantly turns paper documents into distributable digital files and when powered through the USB port, can be used even when electrical power is not available, convenient and compatible. Imagine being able to scan receipts in your car, business cards on an airplane and work effortlessly in foreign countries.