Supra USB 2.0 Excalibur Type A-B Cable


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USB Excalibur
Silver Edition – Our best USB Cable

We have for a couple of years been developing an ultimate USB Cable, the result was USB Excalibur. Our goal was simple, to make the world’s best USB cable, with no compromises or shortcuts. Excalibur is a premium high speed cable with improved data and power transmission, a complement to the existing USB series. Both the data pair and the power pair are optimized for their purpose, transmit data and power.

The twisted data pair is made of PE isolated silver plated oxygen free copper wires. The silver layer is very thick, 3.8% of the total wire, for best conductivity and high velocity factor. Silver is great for high frequencies and high speed data transmission.

The construction of the power conductors are totally different compared to the data pair. To avoid power losses and to maximize the wire area we used 4 tin plated wires in a star quad configuration. Star quad design and the separete screen reduces any RFI greatly .

You probably recognize the design of the plugs, the USB plugs are offspring’s of our popular HDMI plug. Fully shielded in Aluminium. The plugs are detachable to make it possible to route the cable in 16 millimeters conduits including the contact. No more on-site cut-offs and re-soldering, jeopardizing the typical Supra top notch performance.

Technical Info

Mechanical Specifications

Standard USB 2.0 Hi-Speed
Connectors USB A male ► USB B male
Signal Direction Bi-directional
Application Examples Computer peripherals, DAC’s
Data transfer rate 480 Mbit/s
Solder Tin Almit SR-34 Super
Cable strain relief Cable Clamp


Electrical properties

Number of pairs 2 pieces
Lead area Power 4 x 0.24 / 23 Star Quad mm2 / AWG
Lead area Data 2 x 0.24 / 23 Twisted mm2 / AWG
Number of strands 19 pieces
Strand dimension Ø 0.127 mm
Lead material power Tin plated oxygen-free 5N copper
Lead material data Silver plated oxygen-free 5N copper
Insulation Low capacitance PE
Shielding Aluminized PET foil
Jacket Heat and age resistant PVC
Flame retardant No
External dimension Ø 7.3 mm

Electrical performance

Data transfer rate 480 Mbit / s
Impedance 90 Ohm
Velocity factor 0.66x C (speed of light)

Additional information


1.0m, 2.0m


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