Why wireless n 150 based on wireless n technology the dwa 127 achieves wireless speeds of up to 150 mbps and extended coverage with virtually no dead spots it is the ideal upgrade for 80211g notebookspc enhanced wireless range the dwa 127 wireless n 150 high gain usb adapter has a high gain antenna that boosts the signal reception to allow you to enjoy wireless coverage over a wider distance than with a regular wireless adapter the antenna is also rotatable so you can eliminate dead spot