PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Outdated 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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchAn 8-fluid-ounce cup of decaf coffee typically contains 2–15 milligrams of caffeine, according to the U.S. Food and Drug Administration (FDA). Decaf is not caffeine-free, and the amount in a particular cup varies with the product, serving size and preparation.
How much caffeine is in an 8-ounce cup of decaf?
The FDA’s typical range is 2–15 mg in an 8-fluid-ounce cup. Other reputable references give lower figures for particular formats: Mayo Clinic lists 1 mg for 8 ounces of brewed decaf, 1 mg for a 1-ounce decaf espresso, and 2 mg for 8 ounces of instant decaf in its February 6, 2025 table (Mayo Clinic’s caffeine chart).
Those numbers are not necessarily contradictory: they describe different products and servings, and caffeine content varies. The FDA cautions that amounts in specific products and container sizes can differ. Growing conditions and brewing time are among the factors Mayo Clinic identifies as affecting caffeine content.
Does decaf coffee still have caffeine?
Yes. “Decaf” means that much of the caffeine has been removed; it does not mean none remains. The FDA says decaffeinated coffee and tea have less caffeine than their regular counterparts but still contain some. The amount in a specific cup cannot be inferred from the word “decaf” alone.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#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.
How much caffeine is in decaf espresso or café coffee?
A 2006 study measured decaf drinks from coffee establishments and found 0–13.9 mg per 16-ounce serving across ten samples. In the Starbucks samples included in that study, decaf espresso contained 3.0–15.8 mg per shot, while brewed decaf contained 12.0–13.4 mg per 16-ounce serving (McCusker et al., Journal of Analytical Toxicology).
These are measurements of drinks sampled for that study, not a current guarantee for a particular café, outlet or recipe. They also use different serving sizes from the FDA’s 8-ounce typical range. Avoid comparing the figures as if they described identical portions or standardized preparations.
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.
How to find the amount in your own decaf
- For a café order: Ask the retailer whether the drink contains caffeine and how much. The FDA notes that restaurants and other retail food establishments are not legally required to provide caffeine amounts.
- For packaged coffee: Check the product information or contact the manufacturer if an exact amount matters.
- For a general estimate: Use the FDA’s 2–15 mg per 8-fluid-ounce cup as an orientation, not a promise about a particular brand or preparation.
What decaf means if you are limiting caffeine
The FDA says 400 mg of caffeine per day is an amount not generally associated with negative effects for most adults. That is general caffeine guidance, not a decaf-specific limit, and the FDA notes that people differ in sensitivity and in how quickly they eliminate caffeine. Anyone who is pregnant, trying to become pregnant, breastfeeding, taking relevant medication or concerned about a health condition should discuss caffeine limits with a health care provider. People who react strongly to caffeine should not treat decaf as caffeine-free; the FDA says they may want to avoid decaffeinated beverages altogether.
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
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.
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.
