Keystone housing surface-mounted, unequipped, for individual modules in Keystone design, sturdy sheet steel housing, upper housing section powder-coated in RAL9010, easy attachment and removal of the upper housing section thanks to screw-free fastening, potential equalization via flat plug possible, additional cable strain relief on the lower housing section with cable ties, the housing is suitable for direct wall mounting, as a desktop and with a mini mounting rail adapter for mounting on a mounting rail, the housing base of the 3-port and 4-port version can be removed. Here there is an additional fastening option via a 60 mm hole track, optionally available and usable in all housings except 2 ports: FO extension set for module and Keystone AP housing 130861-MSK-E, optionally available for housing 2x12 ports: strain relief for patch cable 130861-24ZE-E, variants: 2, 3, 4, 6, 8, 12, 16 and 2x12 ports