Add Two Db9 Rs-232 Serial Ports To A Desktop/Laptop Using A Single Usb-A Port - Db9 Nuts Pre-Installed; Db9 Screws Included For Device/Cable Compatibility - One-Piece Tpe Housing And Level-4 Esd Protection; Copper Shielding; Gold Plated Connectors; Mounting Bracket Incl. - Transmit/Receive Led Indicators; Usb Led For When The Adapter Has Successfully Enumerated - Windows/Macos/Linux; 1Ft (30.5Cm) Cable Length After The Mountable Hub; Max Baud 115.2Kbps; 4Kb Fifo; Ftdi Ft232H Chipset