Connectors are where cabling becomes hardware: modular plugs and jacks, keystone inserts, couplers and gender changers, field-termination connectors for copper and fiber, and the adapters that bridge one interface to another. This is the drawer every installer and technician draws from.
Precision is the whole game. Within a single connector family the variants - category rating, shielding, keying, gender, termination style - are rarely interchangeable, so specify against the cable and the port on both sides, not against the family name. For structured cabling, keep connectors, jacks, and patch cords at the same category rating as the cable plant; the link performs at the level of its weakest component. Buying connectors by the bag or box alongside the cable they terminate keeps a job from stalling on a two-dollar part. COLAMCO prices connector and termination lists at volume for business, government, and education build-outs.