TAA Ergonomic Keyboard with Smart Card Reader. The VP3827 Ergonomic Keyboard with CAC Reader is a TAA-compatible replacement for lost or damaged keyboards purchased by federal government agencies, the military, their suppliers and vendors requiring products manufactured under the U. S. Trade Agreements Act. Designed for use in federal government and military applications, the VP3827 Ergonomic Keyboard with CAC Reader is a ready replacement for lost or damaged government and military keyboards. The TAA compliant, WHQL certified Ergonomic Keyboard features 108 tactile response keys, 12 function keys, Windows hot keys and an integrated CAC compatible Smart Card Reader VP3827.