This is a handheld USB credit and debit card reader from MagTek, the IPAD 100KB (no relation to Apple), model TD-427. It powers up, and at least under Windows 7 it gets properly identified and drivers installed. That is the furthest I could test it. I do not know if it runs on anything later than 7. No software or anything else is included.
Accepted payment methods are:
Cash (mailed in a secure manner)
Money Orders and Cashier's Checks
Personal Checks (expect a hold of up to 10 business days for clearing)