PC4-PRESTO • CompactPCI
®
PlusIO • 4
th
Generation Intel
®
Core™-4xxx Processor
Universal Serial Bus (USB)
The PC4-PRESTO is provided with twelve USB ports. All of them are USB 2.0 capable, but two ports,
routed to front panel connectors, are also supporting the USB 3.0 SuperSpeed standard.
The USB 2.0 interfaces are distributed to the front panel (two ports), two to the expansion board
interface connectors J-EXP, four to the high speed expansion connector J-HSE, and four ports are
available across the backplane connector J2.
The front panel USB connectors can source a minimum of 1.5A/5V each, over-current protected by
two electronic switches. Protection for the USB ports on the expansion interfaces and on the J2 PlusIO
connector is located on expansion boards. The USB xHCI and two EHCI controllers handling the USB
port operation at SuperSpeed, high-speed, full-speed and low-speed are integrated into the QM87
PCH.
© EKF -28- ekf.com