1. Integrated Digital Eelectronics (IDE) port:
IDE devices like Harddisk drives, CD-ROM drives are connected via 40-pin ribbon cable.
2. Accelerated Graphics Port (AGP):
The AGP is an advanced port designed for Video cards and 3D accelerators designed by Intel. AGP is to provide enhanced graphic accelerator cards, thus enhancing the picture quality of the screen.
3. Small Computer System Interface ( SCSI) port:
This port is used for adding external devices such as high-speed hard disks, CD-ROM drives, scanners etc., These ports are expensive but does fast data transfers.
