Lots of bad reviews is it as good as people say?

I'm using two of these Startech USB 3.1's at the same time with 16TB and 18TB HDDs in them for a total of 4 drives without any problems.

I have a HD with unreparable bad sectors but still running. If I want to replace the HD, is this the best way to go? No need to by new OS?

If by unrepairable you mean SMART Current Pending Sector then offline duplication is NOT recommended. Tested on SDOCK2U33RE with a 1.5TB drive w/ 6 reported errors the duplication was still at 0% after 24 hours. Also be advised this model is NOT capable of retrieving SMART data over USB (newer chipset than older models). You're going to have to use ddrescue or such.

Can I use as docking station

I had the same question. Yes, it can be used as a dock, both bays functioning at the same time with hard drives in each bay. But be advised that this unit cannot actually achieve the advertised 10Gbps speeds -- even if using 2 SSDs in RAID 0 -- because this unit only has a single SATA III controller for both drive bays, which caps the total access speed at 6Gbps.

Can I clone a Samsung 970 evo to any other m2 ssd (intel, hp, ect)?

No, SDOCK2U313R supports 2.5" & 3.5" SATA SSD/HDD drives not NVMe based SSDs such as the Samsung 970 Evo. Atha, StarTech.com Support

Sdock2u313r | Desertcart French Polynesia

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Description

⚡ Clone like a pro, no PC required — speed meets simplicity!

BLAZING FAST CLONING - Duplicate entire SATA drives at up to 28 GB/min without a PC.
TRUE STANDALONE OPERATION - No computer needed—perfect for on-the-go IT pros and secure data recovery.
EFFORTLESS TOOL LESS DESIGN - Top-loading toaster style with drive doors and eject buttons for quick swaps.
UNIVERSAL SATA COMPATIBILITY - Supports 2.5" & 3.5" HDDs/SSDs, SATA I/II/III, and 4Kn drives of any capacity.
PRO GRADE RELIABILITY SUPPORT - Backed by 2-year warranty plus free lifetime 24/5 multilingual tech assistance.

The StarTech Dual-Bay SATA Duplicator Dock (SDOCK2U313R) is a professional-grade, standalone hard drive cloning station that supports 2.5" and 3.5" SATA HDDs and SSDs. Delivering sector-by-sector duplication at speeds up to 28 GB/min via USB 3.2 Gen 2, it features a tool-less, top-loading design with eject buttons for seamless drive swapping. Compatible with all SATA generations and 4Kn drives, it’s engineered for IT professionals needing fast, reliable backups and data recovery without a host PC. Includes USB-C and USB 3.0 cables, backed by a 2-year warranty and lifetime multilingual support.

Specifications

ASIN	B019Y4JE22
Best Sellers Rank	#9 in Hard Drive Docking Stations
Brand	StarTech.com
Built-In Media	1xUSB-C to B Cable - 40 inches,1xUSB 3.0 A to B Cable - 40.75 inches
Color	Black
Compatible Devices	Desktop, Personal Computer, Laptop, Tablet, Smartphone
Connectivity Technology	Bluetooth
Customer Reviews	4.4 out of 5 stars 701 Reviews
Data Transfer Rate	10000000000 bits_per_second
Enclosure Material	Plastic
Global Trade Identification Number	00065030863551
Hard Disk Form Factor	3.5 inches
Hardware Interface	USB
Hardware Platform	PC
Item Dimensions L x W x H	5.6"L x 5.2"W x 2.8"H
Item Highlight	Standalone cloner copier, Sector-by-sector, SATA III 6Gbps, USB 3.2 Gen 2 10Gbps, 4Kn, TRIM, Toolless, Eject buttons, No PC
Item Type Name	Drive Dock
Item Weight	0.51 kg
Manufacturer	StarTech.com
Material	Plastic
Memory Storage Capacity	28 GB
Mfr Part Number	SDOCK2U313R
Model Number	SDOCK2U313R
Number of Items	1
Number of Packs	1
Product Dimensions	5.6"L x 5.2"W x 2.8"H
Supported Devices Quantity	2
UPC	065030863551
Unit Count	1 Count
Warranty Description	2 Year

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27723F

Duties & taxes included

In stock

Sold byAmazon French PolynesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to French Polynesia.

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TrustScore 4.5 | 7,300+ reviews

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SDOCK2U313R

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