GW-USMini2N
This wireless mini-USB adapter transmits data at 150 Megabytes per second (Mbps), and it is compatible with the USB 1.0, 1.1 and 2.0 interfaces. It is compatible with Institute of Electrical and Electronics Engineers (IEEE) 802.11b/g/n standards, and it features the following security technologies: Wired Equivalent Privacy (WEP), Wireless Internet (WiFi) Protected Access -- Temporal Key Integrity Protocol (WPA-TKIP), standard WPA, WPA2 and WiFi Protected Access 2 -- Advanced Encryption Standard (WPA2-AES). It also supports WiFi protected setup (WPS), which allows you to set up a protected wireless connection. This product is compatible with Windows 2000, XP and Vista, and Mac Operating System (OS) 10.3 or later versions. As of 2010, this product costs approximately $20.
Wireless-G USB
The Cisco Linksys Wireless-G Compact USB Network Adapter with SpeedBooster (model number WUSB54GSC) is compatible with 802.11b/g standards and USB 1.1 and 2.0 interfaces, and it comes with WPS, WPA and WEP encryption. This device is designed to boost data transfer by 35 percent over standard wireless USB adapters, and it can transfer data at up to 54 Mbps. It comes with a push button security setup, which helps you to create an encrypted data connection, and this device plugs directly into your USB 2.0 port on your computer. The Cisco Linksys Wireless-G Compact USB Network Adapter with SpeedBooster also features a plug and play connection, which means that your computer will automatically recognize the device as soon as you plug it in. As of 2010, this product costs between $25 and $60.
Wireless G USB Adapter
This is a Belkin wireless adapter, which you can use on either your PC or laptop computer, and it comes with a lifetime warranty and free 'round-the-clock technical support. This product is 802.11g and USB 1.0, 1.1 and 2.0 compatible, and it comes with WEP encryption. It has a wireless range up to 400 feet, and it is compatible with Windows 2000, XP and Vista. The product number for this adapter is F5D7050, and it costs $39.99 in 2010.