MARS AE2800 Bill Acceptor The new MEI AE2800 accepts all bill denominations from $1 to $100 and offers the same proven technology and reliability features as other MEI cash acceptors at an ideal price point for kiosks, self-checkout systems and other unattended retail POS systems.		MARS AE2800 Downstacker Bill Acceptor The MEI AE2800 Downstacker bill acceptor provides all the performance and capabilities of the AE2800 Upstacker bill acceptor in a downstacking configuration that's perfect for many retail applications. Like its upstacking sibling, the AE2800 Downstacker bill acceptor accepts $1, $2, $5, $10,$20 and $100 bills.