Adaptec USB2connect Host Bus Adapter - Manual (Page 6)

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Overview
USB2connect Host Bus Adapter
The Adaptec USB2connect Host Bus Adaper is a USB 2.0 PCI host
adapter for PC and Macintosh computers that provides connectivity
to USB 1.1 and USB 2.0 devices. USB 2.0, or Enhanced Host
Controller Interface (EHCI), is the fastest USB standard – capable of
transferring data at up to 480 Megabits per second while
maintaining backward compatibility with USB 1.1 Open Host
Controller Interface (OHCI) devices.
With three external ports on the AUA-3100LP, five on the AUA-5100,
and one internal USB port on each, you can easily connect up to 127
devices to your USB2connect adapter.