USB-C vs USB-A Inner bits

Creators & Developers
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#1

Opened up both USB module types and noted an interesting thing. The type A has metal on both sides of the module. The type C has plastic cover on one side.

Also the A obviously has conductive strips that contact both top and bottom covers. So it is shielded somewhat from interference.

C does not have the conducive strips at all. So I wonder if the placement of the C type has varying effect due to the plastic cover (facing into the unit) and something causing interference.

Thoughts @nrp ?

FYI if anyone else tries to open a module, it feels like it’s glued down, but it’s not. It has tiny fingers on the sides. The cover slides off… Carefully.

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Guidance on disassembling expansion cards
Guidance on disassembling expansion cards
#2

The metal vs plastic top cover is for thickness reasons. The USB-A receptacle is thick enough that the plastic can’t be molded thin enough to fit it.

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Why do the USB-A Expansion Cards have a metal sliding cover whereas USB-C cards are plastic?
#3

@nrp Ok makes sense.

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#4

@nrp or any other frameworkers: would you mind sharing the part for that USB-C receptacle? Kinda unique looking part, and for a dual USB-C expansion card, it would obvs be nice if the height of the ports matched the OEM cards.

#5

Mechanical DXF and PDF files say it’s LOTES AUSB0534-P003A

#6

That is for the internal port, not the expansion card receptacle.

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#7

Thank you for the photos. I realize my idea isn’t going to work. The internals of my SDR (software defined radio) dongle appear that they would fit inside an expansion card. I was hoping the USB-A card had wires I could simply solder to the SDR PCBA. Instead I would have to remove the USB-A from the SDR and place it with USB-C. Possible to do, but more difficult.

#8

hmm, perhaps the USB-C to USB-A breakout board by @Josh_Cook would help here?