Linksys wrt1900acs Dual-Band Wi-Fi Router with Ultra Fast 1.6GHz CPU (V2). Currently loaded with OpenWRT - full information here: https://openwrt.org/toh/linksys/wrt1900acs (v21.02.3)
Can easily be returned back to the Linksys OEM software - full details on the above link also under the: "Return to OEM" section.
Also has additional USB storage configured to facilitate an additional 32GB of installation space. Will be included.
Happy to restore to OpenWRT base config, (wiped of all data or return to OEM on your behalf. Perfect working condition and aesthetically undamaged in any way.