L-com's unique low-profile straight keystone couplers are pre-installed into standard 19" rack panels providing an easy method for coupling 16 Category 5e grade patch cables on a rack. Panels have a black powder coat finish for durability and each port is numbered to simplify cable organization and tracking. Shielded Couplers used to provide protection against unwanted EMI/RFI emissions Larger volume quotations are available.