Top Network Expansion Module Reviews

HiLetgo MEGA2560 ATmega2560-16AU Sensor Shield Sensor Expansion Board V2.0 with Bluetooth SD Card APC220 Wireless RF Ultrasonic Sensor Communication Interface

This MEGA Sensor Shield V2.0 dedicated sensor expansion board assembly market a variety of advantages in one of the expansion board design, PCB Immersion Gold processing technology..
Board not only all digital and analog interface to the steering gear line order form extended out, but also ad hoc Bluetooth module communication interface, SD card module communication interface, APC220 wireless RF module communication interface, and RB URF v1.1 ultrasonic sensor interface, independent expansion a more easy and convenient..
For beginners, do not have to worry about cumbersome and complex circuit connection, will simplify this circuit sensor expansion board in the true sense, it can often be easily connected with the sensor..
A sensor requires only a general 3P sensor cable (regardless of digital cable and analog cable), complete the circuit connection, the preparation of the corresponding program downloaded to MEGA controller reads the sensor data, or receive wireless module back pass data through the arithmetic processing, the final easy to complete your own interactive works..
Sensor Shield allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers..

4 LED lights (LED indicator to know the importance of doing in the actual project, with this indicator can work directly with the program status indicators for easy debugging..
AITRIP 3pcs Multi-Function Shield ProtoShield Multi-Functional Expansion Board Sensor Shield Module with Four Digital Display Compatible with Arduino.
Four digital (using 74HC595 driver provincial IO learning SPI), you can do digital display test (can display temperature, voltage, counter value, etc.)..
Expansion board directly connected with LD3320 non-specific voice recognition module, you can achieve voice control..
Expansion board directly with the SG90, MG945 MG995 and other steering gear connected to achieve the robot and other complex actions..
Expansion board directly with the SYN6288 free voice module docking,it can achieve voice broadcast function..

CM4 Router Board is an expansion board based on the Raspberry Pi Compute Module 4. It brings Raspberry Pi CM4 two full-speed gigabit network ports and offers better performance, lower CPU usage, and higher stability for a long time work compared with a USB network card..
The board still retains the characteristic GPIO pin header of Raspberry Pi, which makes it applicable for connecting other hat board such as Pi hats, sensors, and PoE hat board, and cooling fan, etc..
There is also a USB2.0 interface that can be connected to USB flash driver, USB keyboard, printers etc..
Besides, there is an OLED(0.91 inch) screen will help you to customize your Router Board's information display style..
1 x 0.91 Inch OLED Display (Pre-installed).

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com.
Cisco 1800 Series integrated services routers are the next evolution of the award-winning Cisco 1700 Series modular access routers.
The Cisco 1841 router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image.
Enhancement of VPN performance with an optional VPN acceleration module.
Plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock.

✔I2C interface, I / O expansion module, two I / O scalability 8 I / O (up to 8 simultaneous use the PCF8574 expanded to 64 I / O).
✔Typical application: I / O resource shortage MCU I / O expansion.
✔Main resources: the PCF8574 I2C interface, 8-bit parallel.
✔Package Included: 5 x PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module.
✔We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution..

X32 Digital Mixer: 40-input, 25-total-bus Digital Mixer with 32 Gain-Programmable Mic Preamps, 25 Motorized Faders, Virtual FX Rack, and 7" Color TFT.
DN32-LIVE SD/SDHC and USB 2.0 Expansion Module: 32-channel SD/SDHC and USB 2.0 Expansion Module for Midas and Behringer Digital Consoles.
SDHC Card 32 GB, Class 10: 32GB SDHC Card.
Extreme PLUS microSDHC Card - 32GB, Class 10, U3, UHS-I: microSDHC Card with Class 10/UHS-I Video Compliance and 95 Mbit/s Maximum Transfer Speed - 32GB.

Full Product specifications: click to view/ total Number of network Ports: 24/ uplink port: Yes/ modular: Yes.
Port/expansion slot details: 24 x Gigabit Ethernet network, 4 x 10 Gigabit Ethernet expansion slot.
Expansion slot Type: SFP+/ shared SFP slot: No/ Number of SFP+ Slots: 4/ layer supported: 4.
Power source: power supply/ Redundant power supply supported: No/: Yes/ environmental certification: RoHS.

Raspberry pi expansion board with integrated Ethernet and USB hub features an RJ45 network port and three USB ports, provides more USB capability to Pi..
Raspberry pi 4 expansion board onboard 3 USB expansion ports, compatible with USB2.0/1.1 transmission.
Raspberry pi hub HAT onboard RTL8152B Ethernet chip, leading out RJ45 network port, 10/100M adaptive.
Multiple indicators on the board for easy viewing of the working status of the power supply, network port and USB expansion interface.
It can work with various versions of the Pi, and the size of the board is designed to perfectly fit the Zero / Zero W / Zero WH..