P/N : SE-SL99100A-2S Bus variety : PCI Express 2 Gen 1 Chipset : ASIX 99100 Data rate : as much as 115200bps Interface : 2 x DB9 Serial port Function : Dual RS-232 Serial port , Full serial Modem management Supports hardware , software Flow control Supports on chip 256 Byte depth FIFOs in Transmit, Receive direction of each Serial port System Linux kernel 4/3/2 , Windows XP / Vista / Win 7 Win 8 / Win 8 / Win 10 32&64bit rs232 usb to rs232 Type-C to M 2 NVME PCIE SSD rs232 to rs485 pcie to rs232 1394 port pcie to 1394 pcie to sata card sata3 sound card usb to rs232 cable Floppy Drive SFRM72-FU-DL UFA1M44-100 SFR1M44-U100K 1 USB SSD FLOPPY DRIVE 720kb USB SSD FLOPPY DRIVE pcie to usb pci to usb Parallel LPT Card pcie to print nvme enclosure express card to printer