Is this OEM or retail?

This drive is a retail item. Only requires installation and formatting to use.

I had a western 4gb drive in a external usb box and could only format 2gb. I'm afraid I would have the problem with this drive?

I have never had that problem with Samsung Drives, But if for some reason you do, New Egg has an Awesome return Policy as long as your not at fault.

Are mounting screws included?

No, mounting screws are not included.

Will this work in a Dell T430 server?

The Samsung 870 EVO SSD is designed with compatibility in mind and has been tested for major host systems and applications, including motherboards and NAS devices. However, specific compatibility with a Dell T430 server is not mentioned in the provided product information. It is recommended to check the server's specifications or consult with Dell to ensure compatibility with a 2.5-inch SATA interface SSD.

is it compatible with the dell xps 15 9520?

I'm no expert, but I don't believe so. according to google you would need a M.2 2230/2280 card. There are tabs on this site to find which kind you need and which one would be best for you.

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SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black

Name: SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black
Uploaded: 2025-08-26
Description: SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black

(1,479)(29) Write a Review

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THE SSD ALL-STAR: The latest 870 EVO has indisputable performance, reliability and compatibility built upon Samsung's pioneering technology.Computer Platform:PC.Environmental Specs - Shock : 1,500 G & 0.5 ms (Half sine). Performance - Encryption : Class 0 (AES 256) TCG/Opal v2.0, MS eDrive (IEEE1667).
EXCELLENCE IN PERFORMANCE: Enjoy professional level SSD performance with 870 EVO, which maximizes the SATA interface limit to 560/530 MB/s sequential speeds, Accelerates write speeds and maintains long term high performance with a larger variable buffer
INDUSTRY DEFINING RELIABILITY: Meet the demands of every task from everyday computing to 8K video processing, with up to 2,400 TBW.
MORE COMPATIBLE THAN EVER: 870 EVO has been compatibility tested for major host systems and applications, including chipsets, motherboards, NAS, and video recording devices

Overview

Specs

Reviews (1,479)

Model
Brand	SAMSUNG
Series	870 EVO Series
Model	MZ-77E4T0B/AM
Part Number	MZ-77E4T0B/AM
Device Type	Internal Solid State Drive (SSD)
Used For	Consumer

Details
Form Factor	2.5"
Capacity	4TB
Memory Components	V-NAND
Interface	SATA III
Protocol	SATA
Cache	Samsung 4GB Low Power DDR4 SDRAM
Encryption	Class 0 (AES 256) TCG/Opal v2.0, MS eDrive (IEEE1667)

Performance
Max Sequential Read	Up to 560 MBps
Max Sequential Write	Up to 530 MBps
Terabytes Written (TBW)	2400TB
MTBF	1,500,000 hours

Features
Features	THE SSD ALL-STAR - The latest 870 EVO has indisputable performance, reliability and compatibility built upon Samsung's pioneering technology. EXCELLENCE IN PERFORMANCE - Enjoy professional-level SSD performance with 870 EVO, which maximizes the SATA interface limit to 560/530 MB/s sequential speeds, accelerates write speeds and maintains long-term high performance with a larger variable buffer. INDUSTRY-DEFINING RELIABILITY - Meet the demands of every task - from everyday computing to 8K video processing, with up to 2,400 TBW. MORE COMPATIBLE THAN EVER - 870 EVO has been compatibility tested for major host systems and applications, including chipsets, motherboards, NAS, and video recording devices. UPGRADE WITH EASE - Simply plug 870 EVO into the standard 2.5-inch SATA form factor on your desktop PC or laptop and let the renewed migration software takes care of the rest. SAMSUNG MAGICIAN SOFTWARE - Make your drive work smoothly with enhanced Samsung Magician 6 software that helps you easily manage your drive, keep up with the latest updates, monitor the drive's health and status, or even enhance its performance.

Dimensions & Weight
Height	7.00mm
Width	70.00mm
Depth	100.00mm

Additional Information
First Listed on Newegg	January 25, 2021

Warranty & Returns

Warranty, Returns, And Additional Information

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Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.

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SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black

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Manufacturer Contact Info

Item#: N82E16820147795

Best Sellers

SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black

Learn more about the SAMSUNG MZ-77E4T0B/AM

Customer Reviews of the SAMSUNG MZ-77E4T0B/AM

Warranty & Returns

Warranty, Returns, And Additional Information

Return Policies*

Manufacturer Contact Info