Supports Hardwired TCP/IP Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE &8 independent sockets simultaneously
& Power-down mode Supports Wake on LAN over UDP
Supports High-Speed Serial Peripheral Interface(SPI MODE 0, 3)
Internal 32Kbytes Memory for TX/RX Buffers
10BaseT/100BaseTX Ethernet PHY embedded
Supports Auto-Negotiation (Full and half-duplex, 10 and 100-based )
Not supports IP Fragmentation
3.3V operation with 5V I/O signal tolerance
LED outputs (Full/Half duplex, Link, Speed, Active)
48 Pin LQFP Lead-Free Package (7x7mm, 0.5mm pitch)

 

Specifications: 
chip type: W5500 
Supports both 3.3V & 5V. 
Hardwired TCP/IP Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE 
10BaseT/100BaseTX Ethernet PHY embedded 
Supports automatic response (full duplex/half duplex mode) 
Supports 8 independent sockets simultaneously 
Internal 32Kbytes Memory for Tx/Rx Buffers 
Power off mode: support 
Network wake: support 
SPI interface (SPI MODE 0, 3), convenient connection with MCU 
Size: 55mm x 28mm 
Colour: Blue

7 connections needed from the ethernet module

(5V, GND, MISO, MOSI, SCK, RST & SS) to Arduino Mega 2560

Arduino Mega 2560 pinout

for Arduino Uno Wiring with Ethernet W5500 :
Wire up as following (ENC = module side):
- ENC SO -> Arduino pin 12
- ENC SI -> Arduino pin 11
- ENC SCK -> Arduino pin 13
- ENC CS -> Arduino pin 8
- ENC VCC -> Arduino 3V3 pin
- ENC GND -> Arduino Gnd pin

Connection in action

Get an example code from https://www.arduino.cc/en/Reference/Ethernet

Make sure to compile with Ethernet2.h because this module is using W5500 chip

End result, it works!