Digi Edgeport 16+4 port USB to serial converter 16 DB9M RS232 ports 4 type A USB ports 1 type B USB portReal Time Systems USB Multi-port converter with USB Hub$2,200.00PriceShipping InfoAdd to CartCondition and WarrantyThis product is used. It has been well maintained and is fully functional. Please contact SES for warranty information and volume discounts, if any.