I am upgrading from a pcie nvme gen 2 to pcie nvme gen 4 ssd. is this duplicator compatible with gen 4?

I haven't tested it, but Gen 4 drives are fully backwards compatible in Gen 2 devices. I would say yes, but you'll have to test yourself.

Can i clone a 512 gb source to a 500 gb target? different brand has slightly different size.

A 500GB and a 512GB are the same drive - it's about how storage is calculated. On another note though, the destination drive must be the same size or larger than the source.

If i have 2 2tb nvme m.2 cards i just bought and i'm going to take out my 512. do i need to clone to both the new 2tb or just one?

I cloned a 512 to a 1 TB, no problem. Youll just have to resize the partition once you reinstall the new NVME. As for cloning both: it depends. Does your pc support raid on the nvme slots or no? If not, then.... no. You don't need to clone both. If it does support raid, then you probably should take advantage of it and clone the old image to both.

Can this also be used to erase/wipe drives?

The seller's answer is misleading without context. Yes, technically it CAN be used to erase/wipe drives, but that is not a native feature to this device. It is a cloner/dock, so you can use the dock functionality to connect to a PC and from there use a third party application to erase the drive. Seller should have specified, but it seems to me (I am a tad cynical by nature) that the seller purposefully didn't in order to increase interest in the product. Boo to you seller. Boo.

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ACASIS typec USB 10Gbps to NVME Clone Dual-Bay External Hard Drive Enclosure for M2 SSD M Key 2230 2242 2260 2280,Supports Hard Drives up to 8TB with Offline Clone M.2 Duplicator Auto Sleep Function

Product ID: 349348904

Details

Brand
FREEGENE
Colour
Silver
Hardware Interface
USB 3.2 Gen
Hardware Platform
Personal
Product Dimensions
8.9L x 8.9W x

⚡10Gbps USB 3.2 Gen2 speed

❄️Aluminum cooling for heat dissipation

🛠️Offline 1-click NVMe cloning

Description

🚀 Clone Like a Pro, Cool Like a Boss

COOL UNDER PRESSURE - Enhanced aluminum alloy design maximizes heat dissipation, ensuring stable operation during heavy workloads.
PLUG PLAY CONVENIENCE - Tool-free installation with smooth plug/unplug support—perfect for busy pros on the go.
BLAZING FAST DATA TRANSFER - Experience ultra-responsive 10Gbps USB 3.2 Gen2 connectivity for seamless NVMe SSD performance.
EFFORTLESS OFFLINE CLONING - Clone dual M.2 NVMe SSDs up to 8TB without a PC—just one click and save hours of setup time.
SMART SSD HEALTH MONITORING - Supports S.M.A.R.T. and TRIM for optimized SSD longevity and performance when connected to a computer.

The ACASIS Type-C USB 3.2 Gen2 dual-bay enclosure delivers blazing 10Gbps speeds for NVMe M.2 SSDs up to 8TB, featuring offline one-click cloning without a PC. Its upgraded aluminum cooling design ensures stable, heat-efficient operation, while smart features like S.M.A.R.T. monitoring and TRIM optimize SSD health. Tool-free, portable, and engineered for professionals who demand speed and reliability.

Specifications

ASIN	B085T9MR9V
Best Sellers Rank	#75,516 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #25 in Hard Drive Docking Stations
Box Contents	2-in-1 USB A/C to USB C Cable, 20W Power Supply, M.2 NVMe SSD Cloner
Brand Name	FREEGENE
Colour	Silver
Compatible Devices	Desktop, Laptop
Customer Reviews	4.2 4.2 out of 5 stars (526)
Data Transfer Rate	10 Gigabits Per Second
Enclosure Material	Aluminium
Hard Disk Form Factor	2280 Centimetres
Hardware Interface	USB 3.2 Gen 2×2
Hardware Platform	Personal Computer
Item Dimensions L x W x H	8.9L x 8.9W x 1.5H Centimeters
Item Weight Unit of Measure	56 Grams
Manufacturer	FREEGENE
Manufacturer Part Number	M03
Memory Storage Capacity	8 TB
Model Number	M03
Network Connectivity Technology	USB
Number of Items	1
Number of Packs	1
Supported Devices Quantity	1
UPC	705338038953 705338039110
Unit Count	1.0 Count

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