HUASIFEI 4G lte Q-880A QCA9531-BL3A 2.4G 300Mbps support VPN Openwrt/OS system DDR2 64MB RAM 2.4GHz support 4g sim card
https://www.vogueparade.com/shopping/EN/200001077/1/1005003161540963/huasifei-4g-lte-q-880a-qca9531-bl3a-24g-300mbps-support-vpn-openwrtos-system-ddr2-64mb-ram-24ghz-support-4g-sim-card//