CA-8PP5-821-12P CA-8PP5-821-16P CA-8PP5-821-18P Description CA-8PP5-821-12P 19°1U UTP Blank Patch Panel 12 Ports Use for UTP Keystone Jacks. CA-8PP5-821-16P 19°1U UTP Blank Patch Panel 16 Ports Use for UTP Keystone Jacks. CA-8PP5-821-18P 19°1U UTP Blank Patch Panel 18 Ports Use for UTP Keystone Jacks.