Is this usb-if compliant? if so, can you offer proof?

Lol. He meant USB-II (aka USB 2.0). Yes. These are USB 2.0 cables. This cable is meant for Qualcomm Quick Charge 2.0 (2 Amp - 10 Watt). It does not support Qualcomm Quick Charge 3.0 (3 Amp - 15 Watt). This cable is: Fast Charge 2.0 only. If the cable specs say 2.4A and/or data transfer speeds of 480 mbps, then it is a Fast Charge 2.0 cable. Also, all cables that say they charge "Up To 3amp" or "Up To 3A" are USB 2.0 cables and do don't meet the quick charge/fast charge speed requirements of USB 3.0. USB 2.0 cables can charge devices up to 2.4 amps, but most USB 2.0 cables actually charge at a much slower charge rate. Most sellers try to round up on the theoretical 2.4A figure and market their cable as a cable that can charge devices up to 3A (aka up to 3 amp). Samsung Galaxy S10, S10 Plus, S10E and S10 5G support Qualcomm Quick Charge 3.0 USB C Cables (15 Watt to 18 Watt) and Qi Wireless Fast Charge Plates (15 Watt to 18 Watt). Note: Quick Charge 3.0 cables charges a lot faster than Quick Charge 2.0 cables. Also, the 2nd most important part of getting an actual USB 3.0 cable is how much faster it will transfer files on/off your phone or device. See "Note 1" below for actual transfer speeds. Please be aware that these are theoretical transfer speeds. Your device and your computer or OTG flash memory device has to support those theoretical listed speeds in order to get the theoretical listed speed of the cable. Note 1: The now-aging USB 2.0 standard can theoretically transfer data at a very high 480 megabits per second (mbps), or 60 megabytes per second (MBps). That's impressive, but not as much as the newer USB 3.0, which can handle up to 5gbps (640MBps)—over ten times as fast as the 2.0 maximum. Note 2: My device is a Samsung Galaxy S10 Plus and my USB cables are USB 3.0 cables. My wall charger that I purchased seperately is a Qualcomm Quick Charge 3.0 18W charger. Using these components, my phone will charge from 0% to 90% in under an hour. If I use the same wall charger and a USB 2.0 fast charge cable designed for Qualcomm Quick Charge 2.0, my phone will still say "Fast Charging" on the main screen, but it will take about 1.5 hours to charge. Make sure your Wall Charger, Car Charger and/or External Battery Pack "Output" USB 3.0 port(s) are rated for 15 to 18W (outputs between 15 Watts to 18 Watts) in order for your USB C 3.0 data/sync cable to charge your device at the best possible speed. Note 3: Checkout "GSMarena.com" and look up your phone to see what USB cables and Watts your phone will support (example: USB 2.0, 2.1, 2.4, 3.0, 3.1). Sincerely, Jacob SurvivalGeek (YouTube) https://www.youtube.com/channel/UCfRsUPToBXp4ZIre__dJg4A

If the usb-c is plugged into an ssd drive and the usb 2.0 into a macbook air 3.0 usb port, what will the transfer speed be, 2.0 or 3.0?

I was disappointed to find out that the transfer rate with this cable is only at USB 2.0 speeds. 95MB/sec. The Techole USB 3 to USB C will give you the 300MB/sec you are looking for.

Can this be used to charge the latest Macbook with an external battery?

In short...no. I tried to use it to extend the length of the Apple USB-C Digital AV Multiport Adapter. Once I plugged this in, the laptop no longer charged (Macbook Pro 13 late 2016).

will this cable work with a oto scope 450 NTE?

Dear customer, Please kindly noted that as long as your oto scope 450 NTE has a USBＣcharging port, this Short USB to C Fast Charging Cable can work. Please make sure your device and charger support Fast Charging& Quick Charge (QC), otherwise, Otherwise, the fast charge of this cable will not work . Any questions, please feel free to contact us from Amazon Message Center. Thanks!

Brand	CableCreation
Connector Type	Usb
Cable Type	USB
Compatible Devices	Smartphone
Special Feature	Braided
Compatible Phone Models	iPad Pro 12.9-in 5th,4th, 3rd, iPad Pro 11-in 2nd, 1st iPad Air 4th, iPad mini 6th Chromebook Pixel 5/ 4/ 3/ 3XL/ 2/ 2XL/ XL / Pixel C Galaxy Z Flip/ S21/ S20/ S10/ S10+ / S9 Nexus 5X/6P
Recommended Uses For Product	Tablet
Color	Blue
Connector Gender	Male-to-Male
Data Transfer Rate	0.48 Gigabits Per Second
Shape	Round
Number of Pins	24
AC Adapter Current	3 Amps
Item Weight	0.02 Pounds
Specification Met	RoHS
Indoor/Outdoor Usage	Indoor, Outdoor
Number of Items	1
Customer Package Type	Standard Packaging
Wattage	60 watts
Outer Material	Braided
Compatible Amazon Tablet Models	Amazon Fire 7 9th Generation, Amazon Fire HD 10 11th Generation, Amazon Fire HD 10 Plus 11th Generation, Amazon Fire HD 8 11th Generation, Amazon Fire HD 8 Plus 11th Generation
Manufacturer	CableCreation
UPC	714602978567
Item model number	CC0275
Item Weight	0.32 ounces
Product Dimensions	15.99 x 8.99 x 1 inches
Item Dimensions LxWxH	15.99 x 8.99 x 1 inches
Voltage	5 Volts
ASIN	B01FM51ARY
Is Discontinued By Manufacturer	No
Date First Available	May 13, 2016

CableCreation USB C to USB Cable Short 0.8FT, Durable USB A to C Fast Charging USB to Type C for iPhone 15/16/17, Galaxy S22,iPad Pro,Android Auto/Cellphone,CarPlay

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