GL3520+GL3224 USB docking station+card reader

Description: 
This project is a GL3520+GL3224 USB3.0 expansion dock+card reader.
Using TYPEC interface, supports double-sided plugging and unplugging.
GL3520 mounts GL3224.
The card reader speed can support up to approximately 80MB/S.
The USB interface speed can support approximately 120MB/S.
Modified based on @zhqsoft boss's GL3520.
Four-layer board design. Using JLC04101H-3313 stacked structure. The impedance was calculated to be 90 ohms. Plate thickness 1.0MM.
Physical
pitfalls:
The current board can definitely run, if it cannot be used. Please check the following points first:
Check the welding.
Check the power supply.
Make sure the suffix of GL3520 is OS322. If OS822 is not recognized, the computer may prompt an unknown USB device.
Make sure you are using a USB3.0 cable. If you are using a USB2.0 cable, only the universal USB hub will be recognized, not the SuperSpeedUSB device. Some GL3224 and GL3520 may need to flash the firmware before they can be used. If it cannot be used after plugging it into the computer, try flashing the firmware first.
The USB port uses a 500mA fuse. If you remove the fuse and insert a piece of tin directly, you can drive a 2.5-inch mechanical hard drive.
 
There is another small point. Some friends may also wonder why RX corresponds to RX and TX corresponds to TX in the connector to 3520. I think the definition of USBHUB is based on the HOST side. USBHUB is only responsible for transmission, not sending and receiving. So TX needs to correspond to TX and RX to RX.
 
Welcome everyone to criticize and correct me.