External (USB) Wireless Adapters

TP-Link Wireless N 300 USB Dongle $35
TP-Link Wireless AC 600 USB Dongle $65
TP-Link Wireless AC 1200 USB Dongle $75

Internal Wireless Adapter Cards

TP-Link Wireless N300 PCI Card $40
TP-Link Wireless N300 PCIEX Card $35
TP-Link Wireless AC1200 PCIEX Card $95

Wireless Routers and Extenders

TP-Link Wireless N Router 4 port $55