Just note that they make several different versions of the 6585 readers, not all of them are EM compliant.
• 6585MF S556 585 085 Mifare reader, white
• 6585MF S556 585 084 Mifare reader, black
• 6585MIK2v S556 591 001 Mifare magnetic card, white
(with un-encoded magneticstripe)
• 6585MIK2a S556 592 001 Mifare magnetic card, ASSA
(with un-encoded magnetic stripe)
• 6585MIK3v S556 593 001 Mifare combi card, white
(EM and un-encoded magnetic stripe)
• 6585MIK3a S556 594 001 Mifare combi card, ASSA
(EM and un-encoded magnetic stripe)
• 6585MITG S556 595 001 Mifare tag, black