Get more flexibility when placing the USB-AC58 adapter with the bundled USB extension cable. Greater freedom of placement means better reception, as it allows you to fine-tune positioning for the best signal available.
With the detachable high-gain antenna you get the option to greatly increase your signal coverage up to 10x more extensive than Wireless-g adapters. Detachable design means you can connect and disconnect antennas at will, and even upgrade them in future if needed.