Not yet, the spec for the protocol hasn't been written and ratified yet; it's still in Draft as of August 2008.
Onboard USB are USB ports built into the motherboard.
Yes, I have one and it has 3 USB 2.0 ports.
No. Both COM ports and USB ports are serial interfaces, but the COM interfaces are driven by single device UARTs.
Yes It Can
Yes, there is both and the ports can also be used as a loop.
This Panasonic Toughbook has 3 USB ports.
iPads do have usb ports. You just have to buy an adapter
There is no minimum or required number for USB ports on a laptop. Depending on the age and design of the laptop, it could be anywhere from zero to ten. I have seen only 2 USB ports on older laptops, most of the new ones atleast have 4 USB ports. Netbooks(10" & 11") have not more than 2 USB ports. If in anycase you need more USB ports, you could buy an USB hub for as less as 10$, which will add 4 more ports to your laptop.
Who told you it had no USB ports? Of course it has USB ports. The iMac has 4 USB ports, 1 Firewire port, 1 Thunderbolt port (2 on the 27" iMac), 1 Ethernet port.
NoYou can open the computer up and remove the USB ports.
The Atom N270 laptop has three USB 2.0 ports.
Well depending on what usb ports it has usb 3 ports are the best to use.
A USB hub can be attached to any of the existing USB ports to provide additional connectors.
Onboard USB are USB ports built into the motherboard.
a USB hub
Most motherboards come with at least six USB ports..
only 2 usb ports on the front