Dark mode
only hard drivesin all categories
only hard drives
United Kingdom

WD Blue WD40EZAZ 4 TB
SMR

Photos - Hard Drive WD Blue WD40EZAZ 4 TB SMR
Videos 3
from £89.99 up to £95.99 
add to listmy lists
WD WD40EZAZ
Blue (storage, protection)SMR
500 GB
32/7200
500 GB
64/5400
1 TB
64/7200
2 TB
256/5400
2 TB
256/7200
2 TB
EARZ
2 TB
EZRZ
3 TB
64/5400
3 TB
256/5400
4 TB
CMR
4 TB
SMR
6 TB
CMR
6 TB
SMR
8 TB
256/5640
Placement
built-in
Type
HDD
Features
pC
Size
4000 GB
Form factor
3.5 "
Connection
SATA3
Manufacturer's warranty
2 years
Cache memory
256 MB
Record technology
SMR
RPM
5400 rpm
Data transfer rate
180 MB/s
Operation power consumption
5.3 W
Standby power consumption
3.4 W
Shockproof
65 G
Reading noise level
28 dB
Standby mode noise level
25 dB
MTBF
300 K
Size
147x102x26 mm
Weight
680 g
Official Website
westerndigital.com
Added to E-Catalog
may 2021
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog WD 2025 - new arrivals, bestsellers, and the most relevant models WD.
How to Choose a Hard DriveUnderstanding how to choose the right HDD for gaming, video recording, server, and other tasks

Buy WD Blue WD40EZAZ 4 TB
SMR

When you make a purchase through links on our site, we may receive a affiliate commission.

Western Digital Western Digital 4TB WD 3.5in PC, Blue - WD40EZAX WD40EZAX

WD Blue internal hard drives deliver reliability for office and web applications. They are ideal for use as primary drives in desktop PCs and for office applications. With a range of capacities and cache sizes, there’s a WD Blue internal hard drive that’s just right for you. | Western Digital 4TB WD 3.5in PC, Blue - WD40EZAX
Official partner WD
Westerndigital.com
Delivery: in United Kingdom
Report
£95.99
Buy in shop

Western Digital Western Digital Blue 4TB (WD40EZAZ)

Desktop Hard Drive / Memory Capacity 4 TB / SATA III (SATA 600) / RPMs 5,400 rpm
Idealo.co.uk
Delivery: in United Kingdom
Report
£89.99
Buy in shop

Western Digital Western Digital Blue 4TB (WD40EZAX)

Desktop Hard Drive / Memory Capacity 4 TB / SATA III (SATA 600) / RPMs 5,400 rpm / Power Consumption (Operating) 4.7 Watt / Power Consumption (Idle) 3.1 Watt / Noise Level (Operating) 25 dB / 3.5 Inch / Height 26.1 mm
Idealo.co.uk
Delivery: in United Kingdom
Report
£95.99
Buy in shop
Series WD Blue (storage, protection)Compare using chart →
WD Blue WD10EZEX
from £32.69 
1000 GB, built-in, pC, 3.5 ", buffer: 64 MB, write CMR, 7200 rpm, connection: SATA3, warranty 2 years
WD Blue WD20EZBX
from £52.15 
2000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 7200 rpm, connection: SATA3, warranty 2 years
WD Blue WD5000AZLX
from £47.90 
500 GB, built-in, pC, 3.5 ", buffer: 32 MB, write CMR, 7200 rpm, connection: SATA3, warranty 2 years
WD Blue WD40EZAX
from £97.99 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD60EZAX
from £150.79 
6000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD20EARZ
from £58.49 
2000 GB, built-in, pC, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD20EZRZ
from £100.00 
2000 GB, built-in, pC, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD80EAAZ
from £185.99 
8000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write CMR, 5600 rpm, connection: SATA3, warranty 2 years
WD Blue WD60EZAZ
from £123.00 
6000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Caviar Blue WD5000AAKS
from £115.00 
500 GB, built-in, pC, 3.5 ", buffer: 16 MB, 7200 rpm, connection: SATA, warranty 3 years
WD Blue WD40EZAZ
from £89.99 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD30EZRZ
from £165.00 
3000 GB, built-in, pC, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD20EZAZ
from £52.78 
2000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Blue WD30EZAZ
from £69.99 
3000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
WD Caviar Blue WD5000AAKX
from £24.99 
500 GB, built-in, pC, 3.5 ", buffer: 16 MB, 7200 rpm, connection: SATA3, warranty 3 years
WD Caviar Blue WD3200AAKX
from £46.26 
320 GB, built-in, pC, 3.5 ", buffer: 16 MB, 7200 rpm, connection: SATA3, warranty 3 years
WD Caviar Blue WD2500AAKX
from £31.97 
250 GB, built-in, pC, 3.5 ", buffer: 16 MB, 7200 rpm, connection: SATA3, warranty 3 years
WD Caviar Blue WD1600AAJS
from £31.97 
160 GB, built-in, pC, 3.5 ", buffer: 8 MB, 7200 rpm, connection: SATA, warranty 3 years
WD Blue WD5000AZRZ
from £38.99 
500 GB, built-in, pC, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 2 years

WD Blue WD40EZAZ configurations

Price for WD Blue WD40EZAZ
WD Blue WD5000AZLX 500 GB
32/7200
from £47.9011 offers
WD Blue WD5000AZRZ 500 GB
64/5400
from £38.994 offers
WD Blue WD10EZEX 1 TB
64/7200
from £32.6918 offers
WD Blue WD20EZAZ 2 TB
256/5400
from £52.781 offer
WD Blue WD20EZBX 2 TB
256/7200
from £52.1514 offers
WD Blue WD20EARZ 2 TB
EARZ
from £58.4912 offers
WD Blue WD20EZRZ 2 TB
EZRZ
from £100.001 offer
WD Blue WD30EZRZ 3 TB
64/5400
from £165.001 offer
WD Blue WD30EZAZ 3 TB
256/5400
from £69.993 offers
WD Blue WD40EZAX 4 TB
CMR
from £97.998 offers
WD Blue WD40EZAZ 4 TB
SMR
from £89.993 offers
WD Blue WD60EZAX 6 TB
CMR
from £150.792 offers
WD Blue WD60EZAZ 6 TB
SMR
from £123.002 offers
WD Blue WD80EAAZ 8 TB
256/5640
from £185.997 offers
Video reviews
WD Blue vs. Black vs. Red & Purple HDD & SSD Differences (2017)
15 February 2017488 348 view
Why are WD Blue HDD's so popular? Western Digital Blue 1TB Review
13 July 201986 254 view
WD Blue vs Seagate Barracuda 2TB HDD full comparison
5 January 202283 340 view
We recommendCompare using chart →
WD Purple Surveillance WD43PURZ
from £84.30 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
Seagate BarraCuda Compute ST4000DM004
from £77.00 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
Toshiba S300 HDWT840UZSVA
from £73.81 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 3 years
Toshiba P300 HDWD240UZSVA
from £78.49 
4000 GB, built-in, pC, 3.5 ", buffer: 128 MB, write SMR, 5400 rpm, connection: SATA3, warranty 2 years
Seagate SkyHawk +Rescue ST4000VX016
from £73.07 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 5900 rpm, connection: SATA3, warranty 3 years
Seagate SkyHawk ST4000VX007
from £81.14 
4000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5900 rpm, connection: SATA3, warranty 3 years
Seagate Ultra Touch
from £71.66 
external, 2000 - 5000 GB, 2.5 "
WD Blue
from £32.69 
built-in, 500 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
Transcend StoreJet 25M3
from £53.98 
external, 640 - 4000 GB, 2.5 ", 5400 rpm
WD Elements Portable 3.0 2.5"
from £51.98 
external, 1000 - 5000 GB, 2.5 ", 5400 rpm
WD My Book NEW
from £111.08 
external, 3000 - 22000 GB, 3.5 "
HP Server SATA 2.5"
from £96.35 
built-in, 500 - 1920 GB, 2.5 ", 7200 rpm / no data
Filters
Models
WD Blue often compared
Seagate BarraCuda Compute
WD Blue
[WD40EZAZ]
vs
Seagate BarraCuda Compute
[ST4000DM004]
WD Gold
WD Blue
[WD40EZAZ]
vs
WD Gold
[WD8003FRYZ]
WD Black 3.5
WD Blue
[WD40EZAZ]
vs
WD Black 3.5" Gaming Hard Drive
[WD4005FZBX]
WD NasWare Red
WD Blue
[WD40EZAZ]
vs
WD NasWare Red
[WD40EFAX]
WD Purple
WD Blue
[WD40EZAZ]
vs
WD Purple
[WD40PURX]
WD Red Plus
WD Blue
[WD40EZAZ]
vs
WD Red Plus
[WD40EFZX]