A4Tech PS/2 Port Mouse


Device driver details
Category: Input Device
Manufacturer: A4 Tech
Caution Level: Safe
Download File Size: 470.7 KB
Operating System: Windows 2003, 95, NT, XP, 2000 and 98
Latest Version / Release Date: 5.12.3022.0 / 08 Oct 2005
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Windows device driver information for A4Tech PS/2 Port Mouse

The A4Tech PS/2 Port Mouse is a PS/2 style of mouse that makes use of an individual dedicated port and individual interrupt settings detached from the device's COM ports. A major problem that confronts most users is resource conflicts which have a relation to the 2 IRQ lines and serial ports they use. A system may have as many as 4 COM ports, although by default, only 2 IRQs are shared and they includeIRQ4 and IRQ3. This has a potential of leading to multiple problems which are not easily resolved because most modems and different devices are only capable of using IRQs that are low-numbered from 2-7. The PS/2 style of mouse makes use of IRQ12 which is unused on most systems. This leads to numerous problems when going from the PS/2 style of mouse to a serial port mouse.

Many PCs have support for PS/2 style of mice and there are of number of steps required when moving from the serial mouse to a PS/2 mouse. The first step is determining whatever is currently being used by checking the PC connection. The port for a PS/2 mouse is a round, small connector while the port for a serial mouse is either a 25-pin or 9-pin D-shaped connector. If a serial mouse is currently being used, then it is important to determine if the PS/2-style mouse is supported by the system. This is enabled by checking the setup program of the BIOS before obtaining a PS/2 mouse which is installed by plugging into its port on the PC. Switching the mouse drivers is an easy task because the PC is capable of detecting change of hardware as well as adjusting the drivers. Finally, the COM Port must be disabled in the setup of the System BIOS. It is highly recommended you run a free registry scan for and A4Tech PS/2 Port Mouse errors before installing any driver updates.


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