UOTEK PCI Express to RS485 Adapter 2 Ports, High-Speed PCIE to RS485 RS422 Serial Expansion Card Industrial Grade for Computer Motherboard Serial Card

UT-792i industrial PCI-E multiport serial adapter is compatible with RS-422/485 standard, it converts PCI-E signal to balanced differential RS-422/485 signal. With built-in optoelectronic isolator and instant voltage control protector, it is designed to protect RS-422/485 ports; it adopts advanced TVS (TRANSIENT VOLTAGE SUPPERSSOR) instant voltage control. In normal situation, TVS tube is in high impedance state; when both ends of TVS tube are impacted by high power instantly, it lowers the impedance with super high speed, and absorbs high current, so as to limit the voltage from both ends in a pre-value, and protect the circuit components from damage by high voltage impact. This protector is with lightning and ESD protection, provides 2,000V each wire with lightning surge protection, and surge voltage and instant overvoltage protection on circuit which causing by all reasons; the tiny interelectrode capacitance ensures high speed transmission for RS-422/485 ports.

• Interface protection: RS-422 & RS-485 provides with 2KV lightning surge, ±15KV ESD protection each line
• Isolation: continuous 2,500Vnms 500VDC isolated voltage, specialized DC/DC module
• Connector: DR44 female x1 Bus: 2.5Gbps PCI Express. Signal: RS-422: T/R+, T/R-, RXD+, RXD-, GND. RS-485: Data+(A), Data-(B), GND
• Transmission rate: 300bps-921.6Kbps. Transmission distance: 1.2km for RS-485/422
• Data bits: 5, 6, 7, 8 Stop bits: 1, 1.5, 2 Check bits: None, Even, odd, Space, Mark
• System: Win2000/XP/Vista/Win7/8/8.1/NT4.0/CE 4.2/5.0/6.0/ Vxworks/Linux 2.4.x/2.6.x