The following is a Linksys EA7500 V2 which has been flashed with OpenWRT version 25.12.5 (if you don't know what OpenWRT is, I would recommend doing some research on it before buying this).
The listing includes the router, the three detachable antennas, and the power adapter.
The unit is missing one of the rubber feet, and there is some damage to one of the antenna connectors. It still threads on and the range appears to be normal from my testing.
Specs:CPU: MediaTek MT7621A (dual core, 880MHz)RAM: 256MBStorage: 128MBWireless MIMO:5GHz 802.11ac 4x4, 2.4GHz802.11n 4x4LAN Ports: 4x 1Gbps portsUSB ports: 1x USB 3.0, 1x USB 2.0