Will it work with this rfid ring (description: "blank 125khz wood ring in-built with copyable t5577 chip, can copy the tag like tk4100/em4100/em4200"

unable to read these low frequency 125 kHz rfid tags, suggest you trying proxmark 3 for clone T5577, EM4100, EM4200

support, referring to the following apps, https://apps.apple.com/us/app/nfc-ideas/id1245536234?mt=12

Can this be used with a yubikey 5 which uses nfc?

Sorry don't know that, only know suppor Yubikey NEO c but Yubikey 5 currently seemed not be supported

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ACS ACR122U - ACR122U smart card reader White USB 2.0 (ACR122 NFC USB - PC/SC NFC Contactless, Buzzer - 13.56MHz contactless technology, ISO 14443 A/B, NFC & FeliCa - Warranty: 1Y)

Product ID: 160108452

Details

Brand
ACS
Colour
white
Connectivity technology
USB
Media type
Memory Stick
Special feature
NFC Technology

📶13.56 MHz NFC tech

🔌USB 2.0 interface

🛡️ISO 14443 A/B & NFC compliance

B/.185

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📲 Unlock the future of contactless interaction—smart, sleek, and indispensable.

PLUG PLAY USB 2 0 - Instant PC compatibility with fast 12 Mbps data transfer—no fuss, just productivity.
RELIABLE RECOGNIZED - Trusted by thousands with a 4.2-star rating and backed by a 1-year warranty for peace of mind.
ROBUST PROTOCOL SUPPORT - Fully compliant with ISO 14443 A/B and ISO18092 standards for universal smart card access.
SEAMLESS NFC CONNECTIVITY - Effortlessly read/write MIFARE, NTAG, and FeliCa cards with cutting-edge 13.56 MHz contactless tech.
BONUS NFC TAG SAMPLES INCLUDED - Get started immediately with 5 NTAG213 and 2 UID MF1 cards—perfect for prototyping and demos.

The ACS ACR122U is a white USB 2.0 smart card reader designed for professional-grade NFC and contactless card applications. Operating at 13.56 MHz, it supports multiple card types including MIFARE, NTAG, and FeliCa, and complies with ISO 14443 A/B and ISO18092 standards. With a fast 12 Mbps data transfer rate, plug-and-play USB connectivity, and included NFC tag samples, it’s ideal for developers and managers seeking reliable, versatile smart card solutions backed by a 1-year warranty.

Specifications

ASIN	B07KRKPWYC
Best Sellers Rank	53,017 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 532 in External Memory Card Readers
Brand Name	ACS
Colour	white
Compatible Devices	Personal Computer
Customer Reviews	4.2 4.2 out of 5 stars (225)
Data Transfer Rate	12 Megabits Per Second
Hardware Interface	USB 2.0
Item Dimensions L x W x H	9L x 6.5W x 1.3H centimetres
Manufacturer	ACS
Manufacturer Part Number	ACR122U
Media Type	Memory Stick
Model Name	ACR122U
Model Number	ACR122U
Network Connectivity Technology	USB
Number of Items	9
Operating System	Windows
Product Features	NFC Technology
UPC	716253772891
Unit Count	1.0 count

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TrustScore 4.5 | 7,300+ reviews

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