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All ports are tested and all should work, but because of potential error, we warranty these switches with a margin of error of up to 1 to 3 bad ports.
This is a group listing, so the item pictured may be different than then one you get, but will be comparable.
3COM Managed Switch 48-Port 10/100/1000Base-T Model: 3CR17662
Package Does not Include:
Items not pictured or listed aboveFree Shipping to Lower 48
14 DAY DOA warranty