Easy to use; modular RJ45 Keystone jack. 110 type IDC. 90 degree connection. To be used with keystone wall plate or panel. Wiring diagram next to wire clips. Note that the width of the RJ45 keystones is such that two cannot be used side-by-side in the same wall-plate. Click the following link for an installation guide: http://www.monoprice.com/manual/How%20to%20-%20Punchdown%20keystones.pdf Monoprice continually strives to improve its product line to bring our customers the best products available. Therefore; improvements and physical design changes may be made to listed specifications without prior notice. Item received may not match photo or specs shown. The color indicated can vary in tone and/or hue between production runs and manufacturing facilities. The color of this item may not be an exact match to any other product; even if they are indicated as being the same color; whether sold by Monoprice or any other vendor. Individual pieces may also vary very slightly in color from each other. Support Files: Dimensions Diagram (Jan 25; 2012)