Compaq Persario 5420 AU 5400 Series

Question

Hi, This computer is around 6 year old i ran the recovery disks that came with the machine everything runs fine except the USB ports. I had a look at the motherboard so I can get the drivers no brand on motherboard must be compaqs own. I rang Compaq they have no idea too old can you guy's help me with the uSB drivers pleaseRegards,Tony Dowling