Moxa's Multiport Serial Boards include Universal PCI, PCI, ISA, & PC104 boards with a wide variety of connection options. Choose from products that provide RS232 only or RS422/RS485 selectable or even RS232/RS422/RS485 selectable. Available in 2, 4, 8 & 16 port and expandable solutions with up to 128 serial ports per host. 2 Port Boards 4 Port Boards 8 Port Boards 8 Ports & Greater For dealer/reseller/quantity pricing please call our staff at 800-222-0172 or log in to the Preferred Partner Pricing Program by clicking here.