Document relates to: All Laplink Products
I'm uncertain which port I need to use to make a successful Laplink connection. Can you help?
Laplink connections can be made over 3 types of cables; Serial, Parallel and USB. Certain operating systems do not support each cable type, however. For a complete listing of Laplink-brand cable options (including Windows compatibility), please Technical Document 708: Which USB Cable do I Have?
A serial port is male in gender, and has either 9 pins or 25 pins. The shape of the port is slightly D-shaped. A serial computer port may be used for a mouse, external modem, scanner, or other linking software such as for a personal data assistant (PDA).
NOTE: Do not mistake the computer's Parallel port for a serial port. Only very old computers have a 25-pin serial port. You cannot attach the wide end of the Laplink serial cable to a parallel port, nor can you attach a gender-changer adapter to force the cables to connect. This is not supported by Laplink technicians and will not work since the port communication method is different between serial and parallel ports.
On most computers, there are 2 ports and they can be marked as COM, SER, with a symbol representing 10101, or completely unmarked. ON moderately old computers, is also very common for computer manufacturer’s to have installed 2 physical serial ports, but to leave one port disabled in the BIOS. On newer computers, there may be onely one serial port, or none at all (especially on a lpatop). Also, for newer computers, it's not uncommon for the serial port to be left disabled in the BIOS, which frees up the resources for other devices. Consult your product specs or PC manufacturer for more information.
Before using a serial port and Laplink's blue cable to make a connection, you need to locate a port that is available physically on the back of the computer and enabled within Windows configuration. Note: Laplink technicians will not support any connection using special port adapters or gender-changer devices. If both of your PC's do not have compatible, functional serial ports, you must switch to a different cable type or connection method.
There are 4 steps to naming the external serial ports on a computer:
A parallel port is female in gender, and has 25 pins. The shape of the port is slightly D-shaped. This is the same port as where your printer attaches. On most computers, there is only 1 port and it can be marked as LPT or with a printer symbol.
Note: The Laplink parallel cable is proprietary, and must be used to connect over the LPT port.
Before using a parallel port and Laplink's yellow cable to make a connection, you need to locate a port that is available physically on the back of the computer and enabled within Windows configuration. It is very unusual for more than one LPT port to be installed on a computer and if so, has usually been done by a computer owner rather than the manufacturer. Using the information from Device Manager's Ports (COM and LPT) line as described above, it is easy to determine the port name for a parallel port. If you're still uncertain, check the settings for your printer.
USB (Universal Serial Bus) Port
USB: A USB port is a slot port, approximately ½" long. On most computers there are 2 ports, and can be marked with a symbol that represents daisy chaining or networking. This type of port will be found only on computers that have been built after 1997.
Before using a USB port and Laplink's USB cables to make a connection, you need to locate a port that is available physically on the back of the computer and enabled within Windows configuration. USB ports are not named in the same manner as serial or parallel ports. To confirm that a computer's USB ports are available, use the computer's user guide for steps on how to check the computer BIOS. Additionally, check Device Manager to ensure that it lists the Universal Serial Bus as a device.
Note: Laplink USB cables are proprietary and must be used for connections using the USB ports. Several USB cables have been released by Laplink, Inc. See our Cable Drivers page for more information.
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Keywords: Cable: Parallel, Cable: Serial, Cable: USB, Connections: Cable, How To: Windows, Product: Compatibility
Platforms: Win95, Win 98/SE, WinNT, WinME, Win2k, WinXP, WinVista, Win7