Dell S4148U-ON-RA 48x (24x Unified) SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F OS10 Switch
SKU: 89098418314

Dell S4148U-ON-RA 48x (24x Unified) SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F OS10 Switch

$2006.99 $2229.99
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

Dell S4148U-ON-RA 48x (24x Unified) SFP+ 2x 40GB QSFP+ 4x QSFP28 B-F OS10 SwitchThe Dell S4148U ON RA switch supports 48 ports, including 24 unified (SFP+ Base T), two QSFP+ (40GbE), and four QSFP28 (100GbE) connections. It delivers a switching capacity of up to 1. 76 Tbps with a forwarding rate of 1320 Mpps, ensuring fast data transfer across networks. With ultra low latency at just 800 nanoseconds, this device is engineered for rapid packet delivery in high speed deployments. The MAC address table has an extensive limit of up

The Dell S4148U-ON-RA switch supports 48 ports, including 24 unified (SFP+/Base-T), two QSFP+ (40GbE), and four QSFP28 (100GbE) connections. It delivers a switching capacity of up to 1.76 Tbps with a forwarding rate of 1320 Mpps, ensuring fast data transfer across networks.

With ultra-low latency at just 800 nanoseconds, this device is engineered for rapid packet delivery in high-speed deployments. The MAC address table has an extensive limit of up to 272,000 entries for managing complex topologies or large-scale applications efficiently. Its flexible architecture suits diverse network configurations requiring robust throughput capabilities without compromising speed or scalability constraints.

Dell S4148U-ON: 24x Unified port SFP+, 24x 10GbE SFP+, 2x QSFP+, 4x Unified port QSFP28, 2x AC PSU, 4x Fan module, PSU to I/O Panel Airflow. OS10 is included.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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.
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SKU: 89098418314

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4.2 ★★★★★
Based on 1314 reviews
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Verified Purchase
Nicole Hoelting
Alexandria, US
★★★★★ 5
Finally sleeping through the night without waking up drenched
I was dealing with night sweats almost every night. Waking up overheated, flipping my pillow over constantly, just uncomfortable and restless. It was starting to mess with my sleep in a real way. Since switching to this cooling pillowcase (and pairing it with a cooling blanket), it’s been a completely different experience. I’m actually staying cool through the night and not waking up soaked or irritated. The fabric feels cool to the touch right away and doesn’t trap heat like a regular pillowcase. It’s smooth, comfortable, and still feels good after washing. Not stiff or weird like some “cooling” materials can be. Is it magic? No. But does it noticeably reduce overheating and help you sleep better? Absolutely. If you run hot at night or deal with night sweats, this is one of those small upgrades that makes a big difference. I wish I had bought it sooner.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
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Verified Purchase
Amazing Sally
Waukegan, US
★★★★★ 5
so far so good
I was surprised at this pair of pillow cases only because the material seemed impossible to be cooling - it's that weird polyester blend. So far I have not awoken feeling sweaty around my face and scalp. I don't recall what I originally paid but I think it is great value for money! If you are sensitive to out of the box smell, I washed mine first and it didn't impede on the efficacy of the cooling!
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Reviewed in the United States on April 28, 2026
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Verified Purchase
Devin Hill
Lexington, US
★★★★★ 5
It’s like sleeping on a beach in San Vito lo Capo
Italian voice: I’m a big meaty fella so I put off a lot of heat ya hear. These pillow cases have changed my life. One moment they’re hot and the next you flip them and you’re blasted with a blast of ice cool what it feels like to chew 5 gum feeling capeesh. I would reccomend these pillow cases to even my grandma. If ya wanta get a rest so good that it feels like ya been sleeping with the fishes get these pillow cases, they’re the real deal. Then stop at Pauline’s joint and grab a slice of pizza say Vinnie sent ya. Anyways I gotta go my wife’s cooking up a mean lasgna and we’re gonna watch the dodgers. Let me know how these treat ya I guarantee they will change your life. Vinnie out
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Reviewed in the United States on February 15, 2026
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Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 4
Soft "cooling" case.
Yes it is very cool when you lay on it. It doesn't stay cold though. Within a minute or 2 to whatever your temp is.
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Reviewed in the United States on December 25, 2025
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Verified Purchase
CountryGal
Fort Morgan, US
★★★★★ 5
Great for hair and skin. Great buy.
These pillow cases are great for my hair and skin. They look good, hold up well in the washer and dryer, and the price is great. They are cooling. Of course I wish they could be more cooling, but honestly I'm not sure that's even possible. Great pillow cases. Already bought more for other heads. Would buy again.
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Reviewed in the United States on March 11, 2026

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