OpenWrt embedded multi 4G/WiFi and 5G router board

  1. (1) MediaTek MT7621A (880MHzdual-coreMIPS) equipped with 256 or 512 MB of DDR3 RAM
  2. (2) 5× Gigabit Ethernet with ESD protection
  3. (3) 3× mini PCIe (PCIe ×1, USB 2.0, microSIM)
  4. (4) M.2/NGFF B-key( USB 3.0/2.0, mini + microSIM)
  5. (5) 16/32/64 MB of SPI NOR flash (optional dual SPI NOR or SPI NOR + SPI NAND)
  6. (6) microSD (SDXC) flash card reader
  7. (7) RTC (I2C bus) with backup battery
  8. (8) 1× USB 2.0 Type-A
  9. (9) 1× micro USB Type-B for system serial console
  10. (10) 802.3at/af PoE support (optional module)
  11. (11) Push-pull micro SIM slot
  12. (12) Push-pull mini SIM slot

Quad-E4G is a universal platform offering wide possibilities thanks to multiple expansion slots

Quad-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.

mini PCIe slots pinou


M.2/NGFF slot pinout


Pin headers


Pin headers (cont.)


MT7621A GPIO map


MT7621A GPIO map (cont.)


Parameter Value
SOC MediaTek MT7621A with 880 MHz dual-core (quad-thread) MIPS 1004Kc CPU
RAM 256 MB of DDR3
Flash 32 MB of SPI NOR
USB 1× USB 2.0 Type-A
1× USB 2.0 micro Type-B for system serial console access (driver free)
Storage 1× microSD (SDXC) flash card reader
Ethernet 5× Gigabit Ethernet with ESD protection
Expansion 3× mini PCIe for 3/4G or WiFi module (PCIe ×1, USB 2.0, micro SIM, 3.3 + 5.0 V)
1× M.2/NGFF B-key 3042/3052 for 3/4/5G module (USB 3.0/2.0, mini + micro SIM)
1× mikroBUS™ socket (SPI and UART buses)
Pin headers 4× 8-pin + 1× 6-pin SIM card (2.54 mm pitch)
1× 4-pin I C bus (2.54 mm pitch)
1× 4-pin system serial console (2.54 mm pitch)
2× 4-pin UART2/UART3 serial console (2.54 mm pitch)
2× 4-pin 3.3 and 5.0 V power supply (2.54 mm pitch)
1× 10-pin SPI flash programming (2.54 mm pitch)
Button 3× push-button
1× power switch
LED 1× power (green)
5× LAN/WAN (green)
3× mini PCIe (green)
1× M.2/NGFF (green)
1× status (green)
Other RTC with CR2032 backup battery
External hardware watchdog
Software U-Boot with web-based firmware recovery and dual-image support
Officially supported in OpenWrt 19.07+ (Linux Kernel 4.14)
Power supply DC 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 WAN
Mounting holes ∅ 3 mm, 200 × 123 mm
Dimensions 210 × 140 × 16 mm

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