I/O Magic (click on 'Tech Support' menu)
IBM - All Drivers & Downloads
ICP-Vortex
    ICP-Vortex - Firmware, Drivers, Tools
    ICP-Vortex - Manuals
Iiyama
Image Tank
Imation
IMC Networks
Impression
InFocus
Infortrend
Initio
InnoVISION
    InnoVISION - Driver
    InnoVISION - Other Downloads
Intel
    All Drivers
    Intel motherboards chipset (all motherboards, all O/S)
    Intel Network Card Drivers (all cards, all O/S)
Intergraph
Interlink Electronics
Intermec
Interphase
IOI Technology Corp
Iomega
iREZ (now GlobalMedia)
Iwill