HIOTECH 10 PCS DB9 Pin Female to RJ45 Female 8P8C Modular Adapter Modem Connector Plug Kit - Light Blue 10 x DB9 Female. 10 x RJ45 (8 Conductor) Female. RJ45 Pin Outs: 1-Blue, 2-Orange, 3-Black, 4-Red, 5-Green, 6-Yellow, 7-Brown, and 8-White. Then trying to run a serial connection over a very long distance, it is better to use a Ethernet line to do so. This unit allows you to configure your own specific pinouts.