The ATEN UC2324 4 - Port USB to Serial RS - 232 Hub allows users to connect up to four serial devices to a single USB port. It features one USB - B 2.0 female input and four DE - 9/DB - 9 male outputs, making it ideal for applications that require multiple serial connections. With a baud rate of 115.2 kb/s and a 16 - byte FIFO buffer, this hub ensures efficient data transmission. It is compatible with various Windows operating systems, including Windows 2000, 2003, XP, and NT. The hub operates within a temperature range of 32 to 122°F (0 to 50°C) and can withstand up to 80% humidity, making it suitable for diverse environments. Its compact dimensions of 4.9 x 3.1 x 1 inches and lightweight design (0.71 lb) enhance portability and ease of use.