USB Port VS. Serial Port on Battery Backup

Posted on 2012-09-11
Last Modified: 2012-09-12

  I noticed that some APC UPS units come with both serial and USB port, but some models only come with serial port.
  What do I gain in terms of functionality when USB connection is used over serial?

Question by:sglee
    LVL 6

    Accepted Solution

    None. Some new servers / workstations don't have serial ports, therefore they included the USB option.

    LVL 6

    Assisted Solution

    serial ports are given, so that if u have older system without usb, then u can use it....else in the newer technology system, usb is best option...speed is also fast compared to serial port

    Author Comment

    @ aadi369
    "speed is also fast compared to serial port" ---> What do we need speed for? If you are referring to the communication speed between the computer and UPS unit, does it make that much of noticeable difference?
    LVL 6

    Expert Comment

    I mean to say that data transfer speed is more fast compare to serial....Just for inforamtion :)
    LVL 69

    Assisted Solution

    I think serial ports max out at 921600 bits/sec (1 Mbit/sec), while USB 2.0 operates at 480Mbits/sec.  There isn't that much data transfer though, so practically speaking, you won't notice a difference.

    Author Comment

    Thank you for your insight.

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