Adds four RS-232 serial ports to PCI Express enabled computer systems. Replaces part # JJ-E40011-S4 Note: Replaces part # JJ-E40011-S4 Easily adds four RS232 DB9 serial ports through an available PCI Express slot PCI Express 1-lane (x1) adapter works with any width PCI Express slot Four high-speed 16550 UART RS-232 serial ports support asynchronous baud rates up to 921Kbps Built-in 256-byte FIFO buffers dramatically increase data transmit/receive speed, especially under Windows multitasking environment Works as standard RS-232 port or with 5V or 12V power output for devices that require power (such as handheld scanners, table scanners, POS displays, etc.) Power is configurable via jumpers with silk-screened settings on PCB for easy identification and setup Supports hardware and software flow control, 5, 6, 7, 8 and 9-bit serial format Onboard power connector provides reliable power source for devices that require power Dual-profile PCB design fits full size and low-profile system form factor with included full and low profile brackets