Manhattan PCI Express Card, 2x Serial DB9 ports, 2.5 Mbps, x1 x4 x8 x16 lane buses, Standard/Low Profile PCI, Three Year Warranty, Box. Host interface: PCIe, Output interface: Serial. Certification: CE, FCC. Data transfer rate (max): 2.5 Gbit/s. Width: 68 mm, Depth: 120 mm, Height: 20 mm