Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Western Digital Hard Drive WD4003FFBX 3.5 inch 4TB SATA 256MB RED PRO NAS DESKTOP BareModel Mumber WD4003FFBX Interface SATA 6Gb s Formatted 4TB Form factor 3. 5 inch Advanced Format Yes Native command queuing yes RoHS compliant Yes Performance Interface transfer rate (max) Buffer to host 6Gb s Host to from drive (sustained) 217MB s Cache(MB) 256 Performance Class 7200RPM Class Reliability Data Integrity Load unload Cycles 600000 Non recoverable read errors per bits read <10 in 1015 MTBF(hours) for 8 24 bay NAS 1000000 Workload Rate(TB
Model MumberWD4003FFBX
Interface
SATA 6Gb/s
Formatted
4TB
Form factor
3.5 inch
Advanced Format
Yes
Native command queuing
yes
RoHS compliant
Yes
Performance
Interface transfer rate (max)
Buffer to host
6Gb/s
Host to/from drive (sustained)
217MB/s
Cache(MB)
256
Performance Class
7200RPM Class
Reliability/Data Integrity
Load/unload Cycles
600000
Non-recoverable read errors per bits read
<10 in 1015
MTBF(hours) for 8-24 bay NAS
1000000
Workload Rate(TB/yr)
300
Power Management
12VDC-/+10%(A, peak)
1.79
Average power requirements(W)
Read/Write
7.2
Idle
3.7
Standby/Sleep
0.4
Environmental Sepcifications
Temperature(oc)
Operating
5 to 60
Non-operating
-40 to 70
Shock(Gs)
Operating(2 ms,read/write)
30
Operating(2 ms,read)
65
Non-operating (2 ms)
300
Acoustics (dBA)9
Idle
29
Seek (average)
36
Item Dimension
6 x 4 x 2
Weight
1.58 LB
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2418 reviews
Sort
Product Reviews
★★★★★ 5
Size perfect
Size: 4.5-7, Color: Electro Pink/Electro Tangerine/Electro Pink
Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
good, worth the value
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
Well it was delivered quick, and all my socks are mostly under armour, as they have developed holes in the heels now, so here i am getting a new set. they fit great, comfortable as usual. some folks may have some sort of issues, while some dont and i cannot complain. worth buying for sure. i recommend
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Reviewed in the United States on April 22, 2025
★★★★★ 5
Kids?
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
I didn’t realize these were kids socks, until after I got them, but the fit is amazing and they stay put, without coming off my heels. I wear an 8.5-9 in women’s shoes.
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Favorite Socks Ever
Size: Medium, Color: Black/Assorted, Size: Medium, Color: Black/Assorted
I absolutely love these socks, they compress in the middle which is my favorite thing about them! Keeps them from slipping off my feet and also adds support, love love love how they feel and how long they last! This is my second pack that I’ve purchased, I had the multi colored ones before and they’ve lasted me two years before finally starting to wear out and fade and get holes. Definitely going to be routinely buying these every year. Good to wear with my work out shoes...winter boots, Nike sandals, and my everyday adidas sneakers. These are so worth it!
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Reviewed in the United States on May 28, 2019
★★★★★ 5
Great ankle socks that stay put at a great price!!
Size: 6-9, Color: Assorted
These are great! I have been looking for a low profile ankle sock that is thinner but doesn’t ride down. (Picky, right?) I try to walk 5-7 miles on my days off. So it’s very important for me to not have to stop every couple of hundred yards, bend down, fix socks, then continue on my way while grumbling about NOT GREAT socks. These are not those socks. They really do stay put!!! And enough cushion to be comfortable also. So definitely a repeat!!
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Reviewed in the United States on December 2, 2018
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