100baseT Straight Cable (PC to HUB/SWITCH) Straight cables are used to connect PCs or other equipment to a HUB or Switch. If your connection is Pc to PC or HUB to HUB you MUST use a Crossed cable. The following cable description is for the wiring of BOTH ends (RJ45 Male connectors) with your category 5 wiring colors (TIA/EIA 568A or 568B). Pin No. strand color Name 1 white and orange TX_D1+ 2 orange TX_D1- 3 white and green RX_D2+ 4 blue BI_D3+ 5 white and blue BI_D3- 6 green RX_D2- 7 white and brown BI_D4+ 8 brown BI_D4-