Turn your HP ElitePad into a powerful POS tool with the HP Retail Case, designed to help you assist customers out on the floor, conduct inventory, and mobilize transactions with a range of payment devices. Create a fixed POS with an optional dock, or mount it for easy customer self service.
HP - ElitePad 1000 G2 / Retail Expansion Dock / ElitePad Docking Station http://www8.hp.com/us/en/products/oas/product-detail.html?oid=7583327&jumpid=reg_r1002_usen_c-001_title_r0001#!tab=compatible_hosts