Fangrui Product Details This Is A Pci Express2 Serial Port Card Designed For Pos And Atm Applications, And Is Also The For Industrial Automation System Integrators. Supports Various Mainstream Operating Systems, Including For And For Linux. In Addition, The Two Extended -232 Serial Ports Can Support Communication Rates Up To 230.4kbps And Provide Modem Control Signals To Compatibility With Various Peripheral Serial Port Devices. Since The Card Is Pcie X1, It Can Be Installed On Various Pcie Slots (including 4x 8x16x). Compliant With Pci-express Specification Revision 1.1 Pci-express Single- (x1) Bus Bandwidth 2.5gbps Support Dos, 8 / 7 / Vista / Xp / 2000 / Server 2003-2008 32/64-bit, Linux And Other Operating Systems Serial Port Interface (rs232) Compliant With Industrial Standard 16c450/16c550 Uart Built-in 256-byte And Built-in H/w, S/w Flow Control Function Each Serial Port Data Transmission Rate Can Reach 250kbps (customized Version Data Transmission Can Reach 1mbps) Baud Rate: 230.4kbps Serial Communication Parameters Da