It worked right away. I use it with both an Ubuntu laptop and a Raspberry Pi. No drivers required. It is a HID (Human Interface Device) and behaves like a keyboard, sending an identification code read from a card or key fob as a keystroke. My only (minor) complaint is that they offer a 14H format, which should give you something like 00000013579acf even if only reading some of the ID digits. The device I received has a configuration box below (in Chinese characters) that is not 8H and is marked. However, it is not returned in 14H format but in 8H format. To use the example above: 13579acf For the money it's probably just one thing, but the 14H option is a $1 waste.
5-in-1 USB Camera Connection Kit with SD TF Card Reader, 3.5mm Headphone Jack, and Charging Adapter for iOS 14 Devices - Compatible with iPhone 12 Pro and iPad - SD Card Reader USB Camera Adapter with OTG Functionality
11 Review
💻 LEEGLOAD 4 in 1 SD Card Reader Adapter for iPhone/iPad/Android/Computer and Digital Camera, Memory Card Adapter with USB C/USB A/Micro USB, Trail cam Card Viewer (Black)
13 Review
TP-LINK UH700 USB Hub, 7.1cm Ports, Black
12 Review
High-Speed Transcend TS-RDF5K USB 3.1 Card Reader for SDHC/SDXC/microSDHC/SDXC Cards - Black
11 Review
Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review
Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review
Smartphone Samsung Galaxy A50 4/64 GB, 2 SIM, black
82 Review
Apple AirPods Pro MagSafe RU Wireless Headphones, White
159 Review