chip board ENC28J60-I/SO. the board 25MHZ crystal. interface board HR911105A. 3.3 V power supply pin. PCB size: 63x18x15mm<br><br>Positioning hole diameter: 3.1mm Weight: about 17g PCB with Ethernet connector: 67x18x17 mm PCB bottom pins: 9.5mm Compatible with Nano Ethernet driver: ENC28J60 Colour:As Shown Material:PCB Debug reminder: 1, the IP address of the computer to a network segment and module such as IP module 192.168.1.2, IP computer set: 192.168.1.3; 192.168.1 is the 3 section; 2, cable connected to the mouth of the computer network module and mouth; (that is, the cable network 1 3,2 , and then do not understand that there are pictures Baidu); 3, the module and the MCU connection should pay attention to the connection of each line is reliable (the is not even connected to the good); 4, and the MCU port IO to confirm that is right; 5, the program recompile, download, confirm whether to download! STM32 and 51 IO Due to different batches, there may be differences in product appearance and printed text, which not affect use<br><br>Package Contents: 1 * for Nano board<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.