I am using a Vakoss 7-port 2.0 USB hub using it’s own power. I used to run 2 printers, PDA dock, mouse, and an external WD HD through the thing. Everything worked perfectly fine when I used the hub to access these devices from an old Vaio running 1.2 GHz Pentium III-M / 512mb RAM – downgraded at USB 1.0 standard. Now I’ve got the hub connected to an HP slimline running at 2.3 GHz Athlon 64 X2 4400+ / 2.0 GB RAM and the computer won’t even recognize a single printer (HP 1020 Laserjet) let alone print. However, when I connect the printer directly to the computer, it works flawlessly. For what it’s worth, I am using cheap 2.0 USB cables if that makes any difference. Does it? Thanks for any advice.