D-Link DIR-865L Wireless AC 1750 Dual Band WiFi router internal antenna mod from 2dbi to 5dbi - YouTube
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QNAP QMiro Plus QMiroPlus-201W Wi-Fi 5 IEEE 802.11ac Ethernet Wireless Router - 2.40 GHz ISM Band - 5 GHz UNII Band - 4 x Antenna(4 x Internal) - 266.75 MB/s Wireless Speed - 5 x Networ
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Amazon.com: TP-Link Archer A10 IEEE 802.11ac Ethernet Wireless Router - 2.40 GHz ISM Band - 5 GHz UNII Band - 4 x Antenna(1 x Internal/3 x External) - 325 MB/s Wireless Speed -