Alfa network quad-e4g multi 4g/wifi and 5g router board,openwrt platform

Quad-E4G_PCBAOpenWrt embedded multi 4G/WiFi and 5G router board (1) MediaTek MT7621A (880MHzdual-coreMIPS) equipped with 256 or 512 MB of DDR3 RAM (2) 5&times, Gigabit Ethernet with ESD protection (3) 3&times, mini PCIe (PCIe &times,1, USB 2.0, microSIM) (4) M.2/NGFF B-key( USB 3.0/2.0, mini + microSIM) (5) 16/32/64 MB of SPI NOR flash (optional dual SPI NOR or SPI NOR + SPI NAND) (6) microSD (SDXC) flash card reader (7) RTC (I2C bus) with backup battery (8) 1&times, USB 2.0 Type-A (9) 1&times, micro USB Type-B for system serial console (10) 802.3at/af PoE support (optional module) (11) Push-pull micro SIM slot (12) Push-pull mini SIM slotQuad-E4G is a universal platform offering wide possibilities thanks to multiple expansion slotsQuad-E4G offers extensive expansion options and decent performance. Three mini PCIe slots with both PCIe and USB buses, equipped with SIM slots, allows assembling a wireless router with multiple WiFi or 4G modules.An additional M.2 B-key slot makes it possible to create high-performance 4G/5G access point with LTE Cat. 6+. Five Gigabit Ethernet interfaces with hardware offload support will serve many end devices without the need to worry about throughput.OpenWrt support and USB-based system serial console make development extremely easy.ParameterValueSOCMediaTek MT7621A with 880 MHz dual-core (quad-thread) MIPS 1004Kc CPURAM256 MB of DDR3Flash32 MB of SPI NORUSB1&times, USB 2.0 Type-A 1&times, USB 2.0 micro Type-B for system serial console access (driver free)Storage1&times, microSD (SDXC) flash card readerEthernet5&times, Gigabit Ethernet with ESD protectionExpansion3&times, mini PCIe for 3/4G or WiFi module (PCIe &times,1, USB 2.0, micro SIM, 3.3 + 5.0 V) 1&times, M.2/NGFF B-key 3042/3052 for 3/4/5G module (USB 3.0/2.0, mini + micro SIM) 1&times, mikroBUS&trade, socket (SPI and UART buses)Pin headers4&times, 8-pin + 1&times, 6-pin SIM card (2.54 mm pitch) 1&times, 4-pin I C bus (2.54 mm pitch) 1&times, 4-pin system serial console (2.54 mm pitch) 2&times, 4-pin UART2/UART3 serial console (2.54 mm pitch) 2&times, 4-pin 3.3 and 5.0 V power supply (2.54 mm pitch) 1&times, 10-pin SPI flash programming (2.54 mm pitch)Button3&times, push-button 1&times, power switchLED1&times, power (green) 5&times, LAN/WAN (green) 3&times, mini PCIe (green) 1&times, M.2/NGFF (green) 1&times, status (green)OtherRTC with CR2032 backup battery External hardware watchdogSoftwareU-Boot with web-based firmware recovery and dual-image support Officially supported in OpenWrt 19.07+ (Linux Kernel 4.14)Power supplyDC jack (5.4/2.0 mm) with lock for 24 V DC input Passive PoE input on LAN1 and optional 803.2af/at PoE module for WANMounting holes&empty, 3 mm, 200 &times, 123 mmDimensions210 &times, 140 &times, 16 mm