If you need a dual band (AC) USB network adapter. Here are some well priced adapters:
$34.30 D-Link Wireless AC1200 USB Adapter - DWA-182 (goes for $68 at office works, probably could get a price match for $32.59)
$41.30 TP-Link AC1200 USB Adapter - T4U
Anyone know if the D-Link is a Rev A (usb 2) or a Rev C (usb 3) ?