The 2011 iMac does not come with a 3.0 USB port. It has four 2.0 USB ports. The new 2012 iMac does have four 3.0 ports.
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.
- USB is a full standard, from physical connection all the way up to software stacks (RS-232 only really defines the electrical interface)- USB is faster- USB has standard drivers for many different device classes- USB can provide power for low power devices- USB has a simple 4 pin connector- USB allows multiple devices to be connected to a single port on the master via a hub
This model has 4 USB ports. The doubles as a eSATA port. This model also comes with a one year hardware warranty as well as a 30 day free software support warranty.
The Five - 2011 2011-08-30 was released on: USA: 30 August 2011
The Five - 2011 2011-09-30 was released on: USA: 30 September 2011
In the Arena - 2011 2011-05-30 was released on: USA: 30 May 2011
In the Arena - 2011 2011-06-30 was released on: USA: 30 June 2011
Chargesheet - 2011 was released on: India: 30 September 2011 (premiere) India: 30 September 2011 UK: 30 September 2011 USA: 30 September 2011
Piers Morgan Tonight - 2011 2011-11-30 was released on: UK: 30 November 2011 USA: 30 November 2011
Dish Nation - 2011 2011-08-30 was released on: USA: 30 August 2011
Cash Cab Chicago - 2011 2011-12-30 was released on: USA: 30 December 2011
Cash Cab Chicago - 2011 2011-03-30 was released on: USA: 30 March 2011