USB 2.0 HUB Expansion Dock

This USB hub was actually completed a year ago and I've been using it ever since. It's quite durable, even when I travel frequently. For everyday use without high bandwidth requirements, it's more than sufficient. I usually use it with a mouse, a downloader, and a USB sound card (with a small connector). The
board itself is also very compact, using a recessed USB-A connector, and the overall thickness isn't too large. It uses the SL2.1A
solution
, supporting USB 2.1, meaning the speed is the standard USB 2.1 rate. Tests with USB flash drives showed no problems with read/write speeds. Since it's USB 2.1, high-speed transmission isn't an issue. It's sufficient for most low-speed devices.
The load capacity is decent, but not too high. I tried using two RGB keyboards with all the lights on, and it triggered the overcurrent protection. Using one keyboard should be fine.
The total cost
is probably around 10 yuan.
Input:

Type-C (reversible);

Outputs:

Two USB-A ports,
Two Type-C ports;

Other

inputs support Type-C OTG function;
Short circuit/overcurrent protection
; Input capacitor filtering
; Output LC filtering (using ferrite beads);
Power indicator light.