where is it made? Taiwan?

Regardless of where this is made there are really only two components to fail. 1) The physical flash drive 2) The housing. The housing is quality, it is anodized, and you will notice a little bit of the anodizing will wear off if you use a 1" split key ring. The flash drive is built like a brick _____ house, and will withstand abuse. The flash drive allows you to speed up transfer speeds up to USB 3.1. For the money this flash drive is awesome.

How well does this hold up on a keyring with car keys?

The question you should be asking is how well will the USB port that you plug the device into hold up with the added mass of the keys/etc. hanging from the end of it. Hopefully, that won't be a great deal of weight - but the USB port really wasn't designed to hold much, and being at the end of the flash drive, its significance will be greater than otherwise (e.g., it's easier to break a thing by placing your weight on the end of a long pry bar than on the end of a short one). If your USB port is low enough that your keys will be supported by the table or counter instead of hanging from the flash drive (and, therefore, the USB port), you may safely disregard this, I suppose.

Has anyone had any problems with this drive recently? I've read some reviews on this that says they experienced a sudden drop in storage capacity

Yes, after a year of usage some of my devices will not read the information any longer. I purchased a 2nd one and had the same issue and it is several months old.

How is the quality of it?

Works just fine! Certainly well protected, as well.

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⚡ Carry Power, Speed & Style Everywhere You Go

BLAZING FAST TRANSFERS - Experience lightning-quick USB 3.0 speeds that keep your workflow seamless and efficient.
MASSIVE 128 GB CAPACITY - Store your entire professional portfolio, presentations, and media without compromise.
RUGGED MILITARY GRADE BUILD - Crafted from aircraft-grade CNC aluminum for ultimate durability and stealth black style.
CROSS PLATFORM COMPATIBILITY - Effortlessly plug and play on Windows, MacOS, and Linux systems—work anywhere, anytime.
5 YEAR WARRANTY PEACE OF MIND - Invest confidently with a robust 5-year warranty backing your data’s safety.

The Corsair CMFSS3B-128GB is a sleek, stealth black USB 3.0 flash drive offering 128GB of high-speed storage. Built with aircraft-grade aluminum, it delivers military-grade shock resistance and partial water resistance, ensuring your data stays safe on the move. Compatible across Windows, MacOS, and Linux, it’s the perfect rugged companion for professionals demanding speed, capacity, and durability backed by a 5-year warranty.

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TrustScore 4.5 | 7,300+ reviews

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Very reliable shop with genuine products. Will definitely buy again!

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Color	Black
Flash Memory Type	USB
Manufacturer	CORSAIR
UPC	843591066396
Global Trade Identification Number	00843591066396, 07426044418404
Product Dimensions	7.62 x 2.54 x 2.54 cm; 36.3 g
Item model number	CMFSS3B-128GB
Is Discontinued By Manufacturer	No
Item dimensions W x H	7.6 x 2.5 x 2.5 cm
RAM Size	128 GB
Computer Memory Type	DDR3L-1600 SDRAM
Hardware Platform	Mac, PC
Operating System	Linux, mac_os
Are Batteries Included	No
Item Weight	36.3 g

Corsair CMFSS3B-128GB 128GB USB 3.0 Black USB flash drive

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