Recommended Free Tools
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Data centers can produce non-ionizing electromagnetic fields (EMF): extremely low-frequency (ELF) electric and magnetic fields from electrical current in power equipment and wiring, and radiofrequency (RF) fields if wireless transmitters are present. These are not X-rays or radioactive particles. The available sources do not establish routine ionizing emissions from ordinary servers or power equipment, or a single exposure level that applies to every data center.
What kinds of fields can come from a data center?
ELF fields from electricity
Electric and magnetic fields occur wherever electrical current flows, including cables, wiring, and power equipment. These are commonly described as extremely low-frequency (ELF) fields. The World Health Organization (WHO) says ELF fields are strongest near their source and diminish with distance. WHO: electromagnetic fields
RF fields from wireless transmitters
If a facility uses wireless transmitters, they can emit radiofrequency (RF) fields, which are radio waves. Their presence and contribution depend on the equipment at that site; general RF guidance is not a measurement or assessment of data centers specifically. WHO: electromagnetic fields and health
Is data-center radiation ionizing?
In everyday conversation, “radiation” can refer to very different things. The ELF fields associated with electrical equipment and the RF signals from wireless devices are non-ionizing: they do not have the same character as ionizing radiation such as X-rays. The sources reviewed do not establish routine X-ray emissions or radioactive-particle emissions from ordinary data-center servers and power equipment.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
The U.S. Food and Drug Administration uses “electronic product radiation” as a broad regulatory term that includes both ionizing and non-ionizing emissions. Its general descriptions of low-frequency equipment, including power-generation and transmission equipment, do not mean that ordinary data-center equipment emits X-rays or radioactive material. FDA: radiation-emitting products
Does living near a data center mean a particular exposure?
No universal exposure figure for data centers is established by the sources cited here. A facility’s fields depend on the sources present, their operating conditions, and how far a person is from them. WHO’s description of ELF fields indicates that they diminish with distance, but that general principle does not substitute for measurements at a particular property.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
One special case is a data center co-located with a high-voltage substation. ITU-T Recommendation K.125 addresses electromagnetic disturbances and protection in that setting, including server immunity to power-frequency magnetic fields and engineering measures such as separation. It is a specialized infrastructure and compatibility recommendation, not evidence that all data centers sit beside substations or a public-health finding about every facility. ITU-T Recommendation K.125
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallWhat does the health evidence say?
WHO’s 2007 fact sheet on ELF fields reported that its expert task group found no substantive health issues related to ELF electric fields at levels generally encountered by the public. For long-term exposure to ELF magnetic fields, the fact sheet described the evidence concerning childhood leukemia as uncertain and substantially weaker than what would be needed to infer causation. These are population-level conclusions, not measurements of exposure at a particular data center. WHO: Extremely low frequency fields
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
WHO’s RF materials describe heating as the main established biological effect of RF fields at sufficiently high levels, while noting that ordinary public exposures are much lower than levels needed for significant heating. This general guidance is not a site-specific finding or a guarantee about every possible exposure. WHO’s electromagnetic-fields Q&A also notes that an RF health-risk assessment monograph was being undertaken; that statement should not be mistaken for a completed assessment. WHO: electromagnetic fields Q&A
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to do if you have a specific exposure concern
- Identify the likely source. Distinguish power-frequency ELF sources such as electrical equipment and wiring from RF transmitters, and note whether high-voltage infrastructure is co-located.
- Consider location and distance. A concern about equipment inside a facility is different from one about a nearby substation or a transmitter. Field strength depends on the source and proximity.
- Seek a qualified, site-specific assessment if needed. Use applicable local guidance and an appropriate measurement approach for the source in question. ITU-T K.125 is relevant to electromagnetic compatibility when a data center shares a site with a high-voltage substation; it is not a general public measurement protocol.
The cited sources do not establish a general need for residents to buy a consumer EMF meter or shielding product. WHO’s illustrative figures for other sources, such as computer screens and power lines, are not data-center measurements and should not be treated as such.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →
