In summary, the 7700 series cable from 3M is intended for internal high-speed wiring applications where the crucial design consideration is controlled impedance. At gigabit rates, cables can no longer be considered as simple wires, but rather should be thought of as transmission lines. In these high frequency links, the impedance of the signal travelling from the transmitter to the receiver must match to avoid degradation to the signal. The 7700 series cable from 3M is a controlled impedance cable rated at 95 Ohms (±5). Additionally, the construction of the cable means wiring harnesses can be folded (to route them through narrow spaces inside equipment and reduce the restriction to air flow) with minimal impact to impedance. The 0.025" cable is constructed using 30 AWG solid conductors and polyolefin (PO) insulators laid in parallel. The outer insulation is laminated with a flexible foil covering, giving the cable a distinct shiny silver, ribbed appearance. Solid wire means it can be soldered directly to a PCB. The cable delivers up to 5 Gbps over 1 meter with connectors. It is available in 10, 14, 16, 20, 30, 50, or 100 conductors.