4G Module (Cat.1)

1. Product Features

This module is developed based on the EG912U-GL (for regions outside North America) and EG915Q-NA (for North America).

The EG912U/EG915Q are LTE Cat.1 modules designed for M2M and IoT applications, supporting seamless network switching and rich interfaces. Core features include:

USB Interface Upgrade

The communication interface has been upgraded from UART to USB, increasing the transfer rate from 0.5 Mbps to 2.5-3.17 Mbps, meeting the demands of video transmission and other high-bandwidth data applications.

EG912U Series Module Specifications

Module	EG912U-GL
Network Coverage	Global bands (B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/66 LTE-FDD + B34/38/39/40/41 LTE-TDD)
Data Rate	LTE-FDD: 10Mbps (DL) / 5Mbps (UL) LTE-TDD: 8.96Mbps (DL) / 3.1Mbps (UL)
Optional Features	GNSS (GPS/GLONASS/BDS/Galileo/QZSS) Bluetooth 4.2 Wi-Fi Scan
Interfaces	3x UART, USB 2.0, PCM/I2S audio, 2x ADC, SPI/I2C/LCM/Camera/SD card (QuecOpen®)
Motherboard Communication Interface	USB (previously: UART)
Antenna	Main antenna + GNSS/Wi-Fi antenna (optional)

Cat-1 (EG912U) Module Specifications

1	Module	Quectel EG912UGL
2	LTE-FDD	B1/ 2/ 3/ 4/ 5/ 7/ 8/ 12/ 13/ 17/ 18/ 19/ 20/ 25/ 26/ 28/ 66
3	LTE-TDD	B34/ 38/ 39/ 40/ 41
4	GSM	B2/ 3/ 5/ 8
5	Antenna	PCB Antenna
6	Communication Interfaces	USB (previously: UART)
7	Power Supply	DC 4-6V
8	Operation Temperature	-20℃ ~ +60℃
9	Storage Temperature	-40℃ ~ +85℃
10	Dimensions	60 x 60 mm
11	Certifications	CE

EG915Q Module Specifications

Module	EG915Q-NA
Network Coverage	B2/B4/B5/B12/B13/B14/B66/B71
Data Rate	LTE-FDD: 10Mbps (DL) / 5Mbps (UL)
Interfaces	UART, USB 2.0, PCM, SPI/I2C/LCM/Camera
Motherboard Communication Interface	USB (previously: UART)
Antenna	Main antenna + GNSS/Wi-Fi antenna (optional)

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Cat-1 (EG915Q) Module Specifications

1	Module	Quectel EG915Q-NA
2	LTE-FDD	B2/B4/B5/B12/B13/B14/B66/B71
3	Antenna	PCB Antenna
4	Communication Interfaces	USB (previously: UART)
5	Power Supply	DC 4-6V
6	Operation Temperature	-20℃ ~ +60℃
7	Storage Temperature	-40℃ ~ +85℃
8	Dimensions	60 x 60 mm
9	Certifications	FCC

Interface Description (J1)

The module communicates with the motherboard via the J1 interface. The current version uses the USB interface.

USB Interface (Current Version)

The module communicates with the motherboard via USB, with transfer rates up to 2.5-3.17 Mbps, meeting the demands of video transmission and other high-bandwidth data applications.

PIN#	Pin Name	Functions	Pin Type	Pull Up/Down
1	USB_DP	USB Data+	I/O	N/A
2	NC
3	CAT1_PWR	High=ON;Low=OFF	IN	N/A
4	NC
5	NC
6	NC
7	USB_DM	USB Data-	I/O	N/A
8	NC
9	GND	GND	POWER
10	GND	GND	POWER
11	NC
12	NC
13	VCC_IN	Power Supply
14	3V3	3.3 V power supply	POWER
15	VCC_IN	Power Supply	POWER
16	3V3	3.3 V power supply	POWER

UART Interface (Legacy Version)

Expand to view legacy UART interface pinout

Earlier versions of the module communicated with the motherboard via UART, with transfer rates of approximately 0.5 Mbps.

PIN#	Pin Name	Functions	Pin Type	Pull Up/Down
1	UART_TXD	UART Transmit	OUT	N/A
2	NC
3	CAT1_PWR	High=ON;Low=OFF	IN	N/A
4	NC
5	NC
6	NC
7	UART_RXD	UART Receive	IN	N/A
8	NC
9	GND	GND	POWER
10	GND	GND	POWER
11	NC
12	NC
13	VCC_IN	Power Supply
14	3V3	3.3 V power supply	POWER
15	VCC_IN	Power Supply	POWER
16	3V3	3.3 V power supply	POWER

Speed Comparison

Interface	Transfer Rate	Use Case
UART (Legacy)	~0.5 Mbps	Low-bandwidth data (commands, status reporting)
USB (Current)	2.5-3.17 Mbps	Video transmission, high-bandwidth data sync

Dimensions

60*60mm