Because so many people not requesting any I/O shield.
Motherboard IO Shield Backplate Centre Parallel Port 4 USB Ports Right LAN RJ45
Motherboard IO Shield Backplate Centre Parallel Port 2 USB Ports Ethernet Port
Motherboard IO Shield Backplate 3 Vertical Audio Ports SPDIF Firewire IEEE 1394
Motherboard IO Shield Backplate 6 Audio Ports Parallel LAN 2x SPDIF Horizontal
ATX Motherboard IO Shield Backplate with PS2 above Left 2 USB Ports
Motherboard IO Shield Backplate 5 Audio Ports Parallel Port Right Square SPDIF
