I've ordered a few of these modules from China in the past and they're pretty standard units there, but they seem to be of a higher quality. They are clean, well soldered and great for my purpose of connecting multiple Arduino Mega boards to MQTT and the internet. Note that they are slightly different than programming a typical "Arduino" board, but once you have it it's easy and these devices worked just fine.
CZH-LABS Electronics-Salon Prototype Shield Kit for 🛠️ Raspberry Pi - Ideal for Breadboard DIY Projects
13 Review
Enhance Your Development Projects with the NVIDIA Jetson Nano Developer Kit (945-13450-0000-100)
12 Review
DSD TECH 2 PCS IIC OLED Display 0.91 Inch: Perfect Arduino ARM Accessory
9 Review
ZOTAC ZBOX-CI325NANO-U Series Nano Fan-Less Mini PC Intel N3160 Quad-Core CPU Silent Performance Barebone System SSD & RAM Not Included, No OS
12 Review
36-Pack Black Rubber PC CPU/Case Fan Screws/Rivets Set for Computer
11 Review
uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review
🖥️ Helifouner 450-Piece Computer Standoffs Spacer Screws Kit: Ideal for Hard Drive, Motherboard, Fan, Power Graphics & Computer Cases
10 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review