Simply45 S45-3590 CAT5 jack is designed for use in CAT5 UTP connectivity keystone applications such as wall plates, patch panels, surface mount boxes etc. The jack is built on a 90-degree configuration 110 IDC punch down tower design. Simply45 S45-3690 is designed for use in cat6 utp connectivity keystone applications such as wall plates, patch panels, surface mount boxes etc. The jack is built on a 90-degree configuration 110 idc punch down tower design. Meets or exceeds requirements for performance recognized by ansi/tia-568.2-d. Jack fits all other installed telecommunication wall plates, outlets and configurable patch panels. accommodates color codes for 568a and 568b.