Features: This M2- to 8 Port RS232 Serial Card is the perfect solution for those needing multiple serial ports on their computer. With PCIe2.0-Gen1compliance and a transmission media of twisted-pair or shielded cable, this card offers- fast- and reliable communication between devices. The EXAR 17v358 chip and 15KV ESD-protection ensure safe and efficient data transmission, making this card a must-have for any professional workspace-. Direction control: Adopt the technology which automatically controls- the data-flow directionautomatically distinguish and control the data-transmission direction. Use this card to connect multiple devices such as printers, scanners, and other peripherals all-in-one place. Specifications: Type: Expansion Card Model: IO-M2F358C-8S Chip: EXAR 17v358 Output interface: 8 RS232 serial ports Motherboard- slot: M2- (B+M Keys) Interface protection-: 15KV ESD-protection for all- serial ports Data bits: 7/8 Stop position: 1/2 Check digit: Even/Add/Mark/Space/None