Is this a 5a or a 3a cable? i need a 5a cable to support super fast charging (samsung galaxy s22 ultra)

This kind of cable is a 5A cable. (20V/5A)

What’s the difference between this newer version and the older version with several good reviews?

Your question can be taken two different ways. If you are comparing USB-B to USB-C, then a device using one or the other isn't compatible with the other. If you are speaking of the comparing a older USB C to a newer USB C the differences are of a technical nature. The older, while good cords, were probably at a lower wattage (i.e. 40w) compared to the newer ones which match the new chargers at 60/100w. For the record both will work but your device will only charge at the rate of the cord. (Ex: If you have a 100w charger and a 40w cord, you're only going to get a 40w charge ... much slower.) Hope that answers your question.

Brand	Anker
Connector Type	USB Type C
Cable Type	USB
Compatible Devices	Laptop, Tablet, Smartphone
Special Feature	Data Transfer, High Speed, Fast Charging
Compatible Phone Models	Audiovox CDM3000
Recommended Uses For Product	Data
Color	Black
Connector Gender	USB-C to USB-C
Data Transfer Rate	0.48 Gigabits Per Second
Shape	Round
Number of Pins	48
Unit Count	2.0 Count
Item Weight	45 Grams
Connectivity Technology	USB
Indoor/Outdoor Usage	Outdoor, Indoor
Number of Items	2
Wattage	100 watts
Item model number	B8756
Item Weight	1.59 ounces
Product Dimensions	35.43 x 0.45 x 0.24 inches
Item Dimensions LxWxH	35.43 x 0.45 x 0.24 inches
Manufacturer	Anker
ASIN	B09LCD851Z
Date First Available	November 9, 2021

Anker USB C to USB C Cable (3.3FT, 2Pack), Type C 100W Charger Cord Fast Charging for iPhone 17/16 Series,MacBook Pro 2020,Pixel and More(USB 2.0,Black)

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