usb3.0 cable,am to af,USB3.0 cable,USB3.0 extension cable 
1.Connector: Nickel plated, gold plated,optional 
2.USB3.0(4.8Gbit/sec) is called super speed USB
Description:

Name: USB3.0 CABLE  (AM) TO (BM)

Connector: Nickel plated, gold plated,optional

Conductor: Pure copper

Edition: USB2.0 1.1 3.0

Gauge: 30AWG 28AWG 26AWG optional

Length: 1.8M 3M 5M customized

Jacket color: beige black transparent

The new usb specification is here. This is USB 3.0, it is called superspeed usb, and that for a big reason.

1.The speed of USB3.0  is ten times faster than USB2.0

USB1.1(1 Mbit/sec and 12 mbit /sec is called full speed USB
USB2.0(480 Mbit/sec ) is called high speed USB
USB3.0(4.8Gbit/sec) is called super speed USB
2.Performace comparison:Transfer of 25 GB HD movie:

USB1.1: 9.3 hours
USB2.0: 13.9 minutes
USB3.0: 70 seconds