W. L. Gore has developed a 10 meter SFP+ copper cable assembly that is fully compliant with the SFF-8431 Revision 4.1 specification. The SFP+ (Small Form-factor Pluggable) offering purportedly goes 3 to 5 meters longer than other passive options. The product features typical values for VMA loss of 3.95 dBe and a dWDP of 5.60 dBe. The SFF-8431 specification calls out maximum limits of 4.40 and 6.75, respectively.
W. L. Gore