20m USB A to B Cables
There is just one 20m option in this range: black. Blue is not listed at 20m - the nearest blue length is 2m.
Where a 20m cable fits
At 20m, these cables bridge long distances in one piece, avoiding the extra joins and adapters that can cause problems. For very long runs, look at the product details for the supported distance.
Other length options in USB A to B Cables
50cm (3) · 1m (6) · 1.8m (6) · 2m (7) · 3m (8) · 5m (8) · 10m (1) · 15m (1)