USB 3 material

Hi, I'm not sure but during the inspection of my iMac (end of 2013), which is supposed to support USB 3 I see the USB sockets only have 4 pins, now all the control I did said it is only USB 2 unless you use a double power cable (IE 2 catches USB 2) is correct that it is the only way to connect a 3 USB device? so I thought I would check out my MacBook Pro (2015) the there are 2 ports USB, one on each side and two ports show that 4-pin. so, how does the USB 3 get speeds of up to 5Gbps, can someone with technical knowledge that explain.

There are two models of iMac ' end 2013 ",-21, 5 and 27 inches.

sheet Apple support:

•iMac (21.5 inch, end 2013) - technical specifications

iMac (21.5 inches, end 2013)... Four USB ports 3... (Turbo Boost up to)

3.9 GHz) with 8 MB of cache L3; iMac and the environment.

support.apple.com/kb/SP687?locale=en_US

iMac (27 inches, end 2013) - technical specifications

iMac (27 inches, end 2013) - technical specifications. ... Four USB ports 3...

Your iMac comes with 90 days of telephone support and free one year...

support.apple.com/kb/SP688

EveryMac.com:

•iMac Record of 21.5 inches (end 2013) 2.7 "Core i5" (end 2013 ...

Factsheet of the iMac "Core i5" 2.7 21.5 inches (end 2013). ...

Graphics"and it allocates up to 1.5 GB of... USB 3.0 ports. No Firewire port...

everymac.com/Systems/Apple/iMac/specs/iMac-Core-i

iMac Record of 27 inches (end 2013) 3.5 "Core i7" (end 2013 ...

Apple iMac "Core i7" 3.5 27 inches (end 2013) Specs. ... Connectivity includes

four USB 3.0 ports... that provides a theoretical maximum of 10 Gbps of band...

everymac.com/Systems/Apple/iMac/specs/iMac-

If the specifications confirm their claim. Backward compatible

for USB 2.0. There are additional points of connectivity to consider.

Comparison: http://www.l-com.com/content/USB-Connector-Chart.html

USB 3.0 internal connector and cable Specifications: Intel.com:

http://www.Intel.com/content/www/us/en/IO/universal-serial-bus/USB3-internal-con cable-nector - specification.html

{Note: mid-2011 to 21.5-inch iMac & 27 inches have slower USB 2.0 spec}

Good luck & happy computing!

Tags: Mac

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