What does it mean no external power adapter needed?
1129224
you just plug the USB 3.0 into your USB port. Then you plug a network cable into the adapter.they mean there's no power adapter needed besides the power supplied from the USB port.
1652310
You don't need the power if your Surface is fully charged. You will need the power only if you ran out of battery (when it comes below 5%).
785028
Does not need external power supply BUT if your HDMI cords are the longer variety it will definitely need externaml power.
443940
You can use it without power. I haven't tried using it with multiple sticks without the power adaptor though.
443943
While I used it without the power adapter temporarily, I would recommend plugging this in. It will give you better longevity of the device, and it won't use extra power from your computer. I am not entirely sure whether you have external drives is a factor. I assume you are talking about external HDD or DVD drives?
212045
When I receive mine, it did not have any other power adapter hardware inside it.... sorry.
635848
This device does not require a power adapter. The limited power that it consumes is delivered via the HDMI input.
1704316
It uses an external power supply. It only used the USB and thunderbolt connections for data transfer.
842171
If your using an external USB device that has its own power supply (i.e. external HD that plugs into the wall) I'm pretty sure you don't need to power this card.
2066563
I'm confused four say yes two say "no" power adapter. The product description (6/15/15) reads: "Includes external power adapter"
75045
It will provide power without being connected to a PC and can charge some items, however devices that require higher current to properly charge (tablets, etc) might be a problem.
1772033
Powered by USB port, no external power adapter needed. This is a very good case and is still working great for me.
1795276
Actually the manual does mention that an external power adapter is available if the attached device needs more power than the ExpressCard can supply. It's on page 2. Frankly, it seems to me, the vast majority of people will be better served by running the supplied USB 3.0 cable from the card to a powered USB 3.0 hub. This avoids any power issues in the first place.
95049
Yes. The manual clearly states that external power is required at all times. USB 3.0 ports are supposed to provide up to 900 mA, each, so requiring an external power source for hubs is pretty much written in stone.Also, it is worth noting that older computer systems probably do not have USB 3.0 ports built into them. My own laptop is a 2011 ThinkPad, and I had to buy an adapter card to get the support.
1641932
There is no adapter, you are buying only the "base" that comes with a cable, but no power adapter you need to provide your own
877209
No this is a classic no frills old school phone. No external power source is needed. Perfect for power outages as long as the phone lines are not down somewhere on you're grid.
577168
I only use it with external power, but I believe I recall reading that it can not be powered by USB.