If you can find any, try to find some really old USB1.1 storage devices. If you insist upon a definitive answer, try this. This is because, for example, storage devices might be sourced from several silicon manufacturers - each chip manufacturer producing components to slightly differing specifications. Unfortunately, we have several issues here that we can do little to resolve.ġ) Apple do not provide any specifications as to the power-delivery capability of their Lightning ports - or the threshold at which the warning will appear.Ģ) Most recent “high speed” USB storage devices will be USB3.0 - which, by definition, have higher current requirements than slower devices.ģ) Peripheral device manufacturers rarely (if at all) publish the specific power needs that are declared by the USB device during the initial USB handshake - principally because this parameter may vary between manufacturing batches of the same device. Unfortunately, as with many core technical specifications, these are not generally released by Apple. What would be useful to end-users would be for Apple to publish the threshold specification, for iPad, that the built-in Lightning/USB interface can provide. ![]() Whilst external USB connectivity to external bulk storage is now supported, the device cannot natively support the higher power needs of some devices. The iPad is first and foremost a low power device - with capabilities and power management features intended to optimise the portability of the device. Some devices are deliberately designed to have low power requirements. Older (usually slower) thumb drives usually have lower power needs. This power can be provided via connection of an additional supply via the adapter - or via a self-powered USB hub (i.e., the hub its own power supply).įaster interfaces and Flash memory consume more power. Many current USB thumb drives exceed the power delivery capabilities of the iPad - and therefore require additional power to operate. This is a burnt-in value is retained within the USB accessory - and if this nominal “declared” value exceeds the power delivery capability of the iPad, then the iPad will display the warning message and not enable power.Ĭonsider also that whilst the iPad (often with the aid of an adapter) can now be connected to external USB accessories, it cannot provide the power capabilities of a traditional computer. Why does apple show that a thumb drive without added power works fine and all mine refuse to turn on showing that “requires too much power” message?Īll USB devices, upon initial connection to a USB Controller, declare their power requirements (in mA) to the host device. This feature sucks if it can only be used with basic thumb drives and connected to power after spending 45€ on the adapter. The lightning cable connected provides and the hard drive requires 0,5A so it should work. ![]() I connect my hard drive WITH THE ADDED POWER OVER THE LIGHTNING PORT and the drive refuses to turn on and I cannot use it, even the “requires too much power” prompt does not show up, with or without adding power through the lightning port on the adapter. I’ve tried multiple and different models and same happens for all, only turning on with added power. Once I connect the lightning cable, the flash drive turns on and shows in the files app. Apple shows in the tips app the ability to access external drives as a new important feature of iPad OS and it advertises that thumb drives can be used without any additional power. Same occurs on my father’s 10.5 iPad Pro. I bought the adapter (45 euros btw) and I’ve connected a simple basic usb 2.0 8gb Kingston Datatraveler G3, and it tells me it requires more power. ![]() ![]() It only shows the flash drive working on the iPad with no added power. In the tips app preinstalled on my 2018 6th gen iPad, they show me a lightning iPad with and external usb flash drive connected to the iPad using the lightning to usb3 camera adapter.
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