http://www.mateksys.com/?p=5159#tab-id-3

Specifications
MCU: 168MHz STM32F405RET6
IMU: MPU6000 (SPI)
Baro: DPS310 (I2C)
OSD: AT7456E (SPI)
Blackbox: MicroSD slot (SPI)
VCP & 6x Uarts, 1x Softserial_Tx supported
9x PWM outputs (7x Dshot compatible with BF/INAV)
2x I2C
3x ADC (voltage, current, RSSI)
4x RX6 pad(one per corner) for BLheli32 ESC telemetry
4x individual ESC power/signal pads
1x Group of G/S1/S2/S3/S4 pads for 4in1 ESC Signal/GND
3x LEDs for FC STATUS (Blue, Green) and 3.3V indicator(Red)
Built in inverter on UART2-RX for SBUS input
PPM/UART Shared: UART2-RX
Vbat filtered output power for VTX

Camera control: Yes
Smartaudio & Tramp VTX protocol: Yes
DJI FPV OSD protocol: Yes
WS2812 Led Strip : Yes
Beeper : Yes
RSSI: Yes

PDB Specifications
Input: 6~36V (2~8S LiPo) w/TVS protection
PDB: 4x35A (Max.4x46A)
BEC: 5V 2A cont. (Max.3A)
LDO 3.3V: Max.200mA
Current Sensor 184A (Scale 179 in INAV/BF)
Battery Voltage Sensor: 1K:10K

Firmware
INAV: MATEKF405SE
BetaFlight: MATEKF405SE
ArduPilot: MATEKF405-WING
Physical
Mounting: 30.5 x 30.5mm, 4mm with Grommets 3mm
Dimensions: 36 x 46 mm
Weight: 10g

Including
1x F405-SE
6x silicon grommets M4 to M3
1x FR4 PCB Plate 36*36*1mm
1x Rubycon ZLH 35V/470uF (Low ESR)