Question 1

Why is the transfer rate so slow? usb 3.0 is 5 gigabits per second and usb 3.1 is 10 gigabits per second. the listed 240 mb/s is slower than usb 2.0

Accepted Answer

This drive is not slow at all - you have your megabits and megabytes confused. USB 2.0 has a max speed of 480mbps, which is 60MB/s, while USB 3.0 can push 640MB/s and this drive is 240MB/s, which is excellent for a single HDD (non-SSD, non-RAID) as most similar drives work in the 180-220MB/s range. Also please keep in mind that with any hard drive, the drive itself is usually the limiting factor in transfer speed. Meaning any single drive is typically not capable of reading/writing data at anywhere near the published max speed that the interface is "capable" of. You have to get into an SSD or multi-drive RAID setup to start really utilizing what today's faster interfaces like USB 3.0 and 3.1 are capable of.

Question 2

Can you hear the fan when it's running or only when its doing a lot of work?

Accepted Answer

I do not hear a fan, but this drive is loud.  Whenever it is doing something if it is on your desktop, you will hear it.  It is actually loud enough it is becoming a serious distraction, and I only use the drive for Time Machine backups.  If it were a drive you were accessing all the time and it was right near you, I would not be able to handle the noise.  I have another LaCie 5TB drive (USB powered, no external plug) and that one is essentially silent.  Why is this one so loud?

Question 3

Can this be used with a 2014 iMac 27" 5K ?

Accepted Answer

The LaCie d2 Professional performs perfectly on Macs and PCs alike, you can connect it to the USB 3.0 port on the back of the iMac 5K

Question 4

Is there an international warranty ? in dubai ? when we purchase this item from america.

Accepted Answer

Sorry, did not research this.  It's a great external hard drive that is built like a tank.  I am confident that it is going to hold up beyond any warranty period.

ASIN	B07G8JT7XN
Additional Features	Desktop
Best Sellers Rank	#82 in External Hard Drives
Brand	LaCie
Built-In Media	LaCie d2 Professional 4TB USB 3.1 TYPE C
Cache Memory Installed Size	4
Color	Black
Compatible Devices	Desktop
Connectivity Technology	USB
Customer Package Type	Standard Packaging
Customer Reviews	4.2 4.2 out of 5 stars (1,187)
Data Transfer Rate	240 Megabits Per Second
Digital Storage Capacity	4 TB
EU Spare Part Availability Duration	5 Years
Enclosure Material	Aluminum
Form Factor	all in one
Global Trade Identification Number	00763649127407, 07636491274076
Hard Disk Description	Desktop
Hard Disk Form Factor	3.5 Inches
Hard Disk Interface	USB 3.0
Hard Disk Rotational Speed	7200 RPM
Hard-Drive Size	4 TB
Hardware Connectivity	USB 2.0, USB 3.0, USB Type C
Hardware Platform	Mac, PC
Installation Type	External Hard Drive
Item Type Name	LaCie d2 Professional 4TB USB-C and USB 3.0 External Hard Drive + 1mo Adobe CC All Apps (STHA4000800)
Item Weight	2.4 Pounds
Manufacturer	SEAGATE
Media Speed	260
Mfr Part Number	STHA4000800
Model Name	STHA4000800
Model Number	STHA4000800
Number of Items	1
Read Speed	240 Megabytes Per Second
Specific Uses For Product	business, personal
UPC	763649127407
Unit Count	1.0 Count
Warranty Description	5-year limited warranty

LaCie - STHA4000800 d2 Professional 4TB External Hard Drive Desktop HDD – USB-C USB 3.0 7200 RPM Enterprise Class Drives, 5 Year Warranty and Recovery Service (STHA4000800) Black

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