Plustek OptiCard 821 is a multi-purpose small document color scanner that has unique ability to scan all types of checks, plastic embossed cards such as insurance cards, social security cards, and credit cards. Besides this, it also offers high-resolution scanning of 4â? x 6â? color photos. The scanner incorporates a USB 2.0 interface and no external power supply is required. It includes advanced software to create searchable PDF files, and powerful Hotcard BizCard Finder 2.5 helps users organize their business cards with efficiency and accuracy.