High speed electrical connector assembly with shieldding system

A high speed connector assembly, comprising:

• a first connector having a first mating face, and a second connector opposite to the first connector and with a second mating face;
• a pair of signal contacts arranged between the first and second connector, each with a median portion, a first engaging portion extending from the median portion and accessible in the first mating face, and a second engaging portion extending from the median portion opposite to the first engaging portion and accessible in the second mating face;
• a pair of ground contacts with the pair of signal contacts arranged therebetween;
• and
• a shielding ground bus having a first shroud portion electrically interconnecting to at least one of the ground contact, and a second shroud portion different from the first portion and substantially enclosing the median portions of the pair of signal contacts;
• wherein
• the second shroud portion is configured with an upper base and a lower base jointly and substantially fully enclosing the median portions of the corresponding pair of signal contacts.