2-port rs-232/422/485 pci express communication card w/surge & isolation Host Interface: PCI Express 2.0 x1 Host Interface: PCI Express 2.0 x1 Product Type: Serial Adapter Product Type: Serial Adapter Manufacturer Part Number: PCIE-1602C-AE Platform Supported: Linux Platform Supported: PC Limited Warranty: 5 Year Form Factor: Plug-in Card Form Factor: Plug-in Card Manufacturer: Advantech Co., Ltd Product Model: PCIE-1602 Product Name: 2-port RS-232/422/485 PCI Express Communication Card w/Surge & Isolation Brand Name: Advantech Brand Name: Advantech Country of Origin: Taiwan Height: 4.7 Width: 4.4 Number of Serial Ports (External): 2 Environmentally Friendly: Yes Environmental Certification: RoHS Environmental Certification: WEEE Number of Serial Ports (External): 2