Lemontree

1usb network port+3usb2.0hub

Overview

In order to reduce the thickness of my current laptop, the Ethernet interface on it has a spring-loaded cover. The network cable often gets stuck, and I have to open the cover while unplugging the network cable. If this continues, one day I will break it, so I need to expand the USB network cable interface.
The USB interface on the computer is limited, and it is already very luxurious to have one button, one mouse and one USB flash drive, so we need one USB to turn more

SR9900 and RTL8152B are two usb2.0 to network port chips with basically the same pins. The speed of usb2.0 can theoretically reach more than 400mbps, which is completely sufficient for the mobile ultra-fast (ji) 200M broadband at my home. The method of using USB to connect the network cable is great. .

Using the SR9900A usb to network port chip and the one-to-four USB 2.0 HUB chip SL2.1A , we can make a homemade 3-port usb hub+1 network port expansion. It is a gift for relatives, friends, partners, classmates, and friends... Excellent choice.

Design Files

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Update:2025-06-23 12:58:58

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