L-com's Universal Master Rack Panel System offers installers the ability to customize their installation with different connections within a single rack panel. The USP Universal Series Sub-Panels can save time, money and rack space. The Master Rack Panel features six punched rectangular openings that will accept any of the numerous USP Sub-Panels that L-com offers. Optional cable management bracket PR-CMB available (sold separately) Same day shipping on most items; Order online today!