- Thunderbolt 3 Memory Stick Vs
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- Thunderbolt 3 Memory Stick Adapter
USB port types and names
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USB (Universal Serial Bus) is an industry standard for connecting computers and other devices. It's available with many types of ports, and each type has a unique shape. On Mac, USB is available with these ports, depending on your Mac model:
USB-A
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Paint brush app download. Type USB-A ports are commonly called USB, USB 2, or USB 3 ports, depending on the USB specification they support. They aren't reversible, so a USB-A connector plugs into the port only when oriented correctly.
USB-C
Type USB-C ports are available on Mac as standard USB-C ports, Thunderbolt 3 ports, and Thunderbolt / USB 4 ports. They all look the same, and the connector plugs into the port in either orientation.
Learn more about identifying the ports on your Mac, as well as the adapters and cables you can use to connect older devices to type USB-C ports.
USB specifications
Pubg mobile release date usa. USB specifications are important primarily when you want the most speed and power for your USB device, or your device needs more power or is using too much power. Every USB port supports a particular USB specification, which determines the port's maximum>USB specifications on MacData transferPower deliveryUSB 4Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 2
Also known as USB 3.2 Gen 2
Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 1
Also known as USB 3.2 Gen 1 or USB 3
Up to 5 GbpsUp to 900 mA at 5VUSB 2.0
Up to 480 MbpsUp to 500 mA at 5VUSB 1.1
Up to 12 MbpsUp to 500 mA at 5V
Also known as USB 3.2 Gen 2
Up to 10 GbpsUp to 15W at 5VUSB 3.1 Gen 1
Also known as USB 3.2 Gen 1 or USB 3
Up to 5 GbpsUp to 900 mA at 5VUSB 2.0
Up to 480 MbpsUp to 500 mA at 5VUSB 1.1
Up to 12 MbpsUp to 500 mA at 5V
To learn which specification is supported by a type USB-A or type USB-C port on your Mac model:
- Choose Apple menu > About This Mac, click Support, then click Specifications.
- Check the System Information app for more details, including about USB devices connected to USB ports on your Mac. Select USB in the sidebar, then select a USB bus on the right.
Get the best performance from your USB devices
USB specifications all work with each other, but speed and power are limited by the cable or device that uses the earliest specification. For example, if you connect a USB 3 device to USB 2 port, your device is limited to USB 2 speeds, and it can't draw more power from the port than can be delivered over USB 2. In other words, to get the best performance, make sure that the USB port on your Mac and the USB cable to your device meet or exceed the USB specification of the device itself.
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If your Mac doesn't recognize a USB device after you plug it into your Mac:
- Check all connections: Unplug the device from your Mac, then plug it back in, and make sure that all cables and adapters are securely connected at both ends. Test with another cable or adapter, if available.
- Plug the device directly into your Mac instead of a USB hub or other device, and if necessary test with a different USB port on your Mac or device.
- Some devices need their own software, such as drivers or firmware. Others work without additional software. Check with the maker of your device, and install all available Apple software updates as well.
- If your device came with an AC power adapter, use it. Some devices can be powered by the USB port on your Mac. Others need more power than your Mac can provide.
- Restart your Mac.
Learn more
- USB 3 devices can create wireless interference that affects Wi-Fi and Bluetooth devices. Learn how to resolve Wi-Fi and Bluetooth issues caused by wireless interference.
- Mac notebook computers with USB-C, Thunderbolt 3, or Thunderbolt / USB 4 can charge over that port using a compatible USB-C power adapter and cable.
Thumb Drives With ThunderBolt Interface
ThunderBolt Keychain Flash Drives
A few years back, Intel showed a prototype ThunderBolt flash drive brought out from the depths of their labs for a public viewing at an electronics show. And that was the last we saw of it. Major storage manufacturers never entered this category of PC and Mac backup devices. Back in the days before SuperSpeed USB 3.0 and 3.1, we briefly saw FireWire 400/800 flash drives from OCZ and Kanguru that marginally outperformed their USB 2.0 counterparts in that era. The big issue for a Thunderbolt flash drive is the $50-$75 price premium ThunderBolt entails. The extra cost of the ThunderBolt chipset and it's licensing requirements isn't cost-justifiable in the eyes of many consumers.Intel Thumb Drive Prototype | Smallest ThunderBolt Drive So Far |
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Tiny ThunderBolt SSD Dimensions: 3' x 2.5' x .65' |
PCIe Thunderbolt SSD Flash Drive
A slim, flash drive shaped option from Transcend pairs an ultra-fast NVMe PCIe fash module with a narrow Thunderbolt enclosure and a short cable. It supports 10 GBps Thunderbolt 1 & 20Gbps Thunderbolt 2 ports of legacy Macs prior to 2016 which have mini DisplayPort style Thunderbolt ports.High-Speed NVMe PCIe SSD Module
USB-C ThunderBolt 3 'Compatible' Flash Drives
The ThunderBolt thumb drive market that has yet to really materialize is being made somewhat moot by the arrival of the Type-C ThunderBolt 3 interface on new Apple Mac's and Windows PC's. Using the SAME connector as USB-C and with the ability to 'Tunnel' USB 3.1 Gen2 protocols over the Thunderbolt3 bus, consumers will be able to plug a USB-C flash drive into a ThunderBolt3 port and may not really notice or care about the performance differences.'Thunderbolt 3 COMPATIBLE' is a term being widely used for 10GPbs USB3.1 Gen2 (sometimes called USB 3.2) storage devices that use USB protocols when plugged into a Thunderbolt 3 port.
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SATA 3 - Speeds To 550MBps
For even higher performance, PCie NVMe modules in a slim USB-C enclosure like shown below can push Read/Write performance up around 950MBps to more fully saturate the USB 3.2 pipeline.
DIY USB-C Flash Module Enclosure
For M.2 NVMe PCIe SSD Cards
![Thunderbolt Thunderbolt](https://9to5mac.com/wp-content/uploads/sites/6/2016/10/caldigit-tuff-thunderbolt-3-cable-usb-c.jpg?quality=82&strip=all&w=1600)
Fast USB 3.1 Thumb Drive | Cheap USB 3.1 Thumb Drive |
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Samsung USB-C & A Flash Drive Dual Interface : 300MBps Speed | SanDisk Ultra USB-C Flash Drive 16GB - 128GB Capacitiess |
With USB 3.1 Gen 2's increased bandwith to 10Gbps, only the most high-end keychain type drive using PCIe NVMe SSD modules can fill the USB 3.1 Gen2 pipeline anyways. Expect to simply see alot of marketing billing USB 3.1 Type-C flash drives as
![Memory Memory](https://fast-company-res.cloudinary.com/image/upload/w_596/fc/3065440-inline-thunderbolt3.jpg)
USB3 vs ThunderBolt Flash Drive Speeds and Costs
Perhaps some of the reasons for the delay in ThunderBolt flash memory drives reaching the market is the Price / Performance benefits (and more accurately, the lack thereof.) It would take some serious price reductions in the cost of licensing ThunderBolt chipsets to justify much of a market for ThunderBolt keychain style drives.As we've seen in the desktop, portable and pocket-drive SATA interface SSD markets, 5Gbps SuperSpeed USB 3.0 bandwidth can pretty much handle the maximum data transfer rates of the most current and fastest USB3 thumb drives quite easily. So there's little point in paying more for a ThunderBolt keychain drive to achieve near identical performance over cheaper USB 3 products.
With the top performing USB 3.X flash drives from companies like SanDisk and Patriot currently maxing out with peak Read / Write speeds slightly over 300MB/s, the NAND flash memory itself -- and not the computer interface is still the limitation. Substituting a significantly more expensive ThunderBolt chipset with direct access to the computer's PCIe bus for a USB 3.0 or 3.1 controller chip wouldn't make the flash memory any faster. At best you might see a trivial, minor increase in performance simply because ThunderBolt is a more efficient protocol without some of the extra CPU utilization and overhead of negotiating a data transfer that the USB Universal Serial Bus device specification involves.
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When a typical single 6GBps SATA III solid-state drive is connected to a ThunderBolt or USB 3.1 Gen 2port they tend to utilize only about half of the available bandwith on either computer interface. Much of this is simply because most data transfers in every-day real-world use sparse, spotty and intermittent Read / Write requests. Most data requests are NOT SUSTAINED, BANDWITH INTENSIVE processes much of the time.
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Tags: ThunderBolt Flash Drives, ThunderBolt Thumb Drive, Intel Flash Drive, ThunderBolt 3 Flash Drive, ThunderBolt 3 Keychain Drive, Type-C Flash Drive