跳转到主内容

修复你的物品

维修的权力

配件 & 工具

Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

1517 个问题 查看全部

USB Flash Drive only recognized on one specific port?

Ok, here goes: I used Dasboot to create a bootable Flashdrive with Diagnostic and repair utilities. The installation went fine and the Flash Drive is indeed bootable and applications are functioning. But, I noticed one slight problem. The USB Flash Drive that I used only works if I use the same port that I used when I Partitioned and formatted the drive, if I use the other USB Port Snow wont even recognize the Flashdrive. I have tried several PRAM resets, SMC resets, no dice. I also tried several other USB devices on the same port that won't recognize the flashdrive and all the other devices work and are recognized, so the Port is functioning properly. Has anyone had this experience before? How was it resolved? I guess it is more of a nuisance that a real problem, but I would like to know why this is happening and what can I do to have the other port recognize the drive as I use the other port for a USB hub and a laptop cooler, so real-estate is a concern. Thanks in advance for your help and I appreciate any help advice offered. I suspect it's some type of power issue, but my iphone charges and works fine on the Port in question.

已回答! View the answer 我也有这个问题

这是一个好问题吗?

得分 3

评论:

How was the drive formatted?

完成的

Mac Extended ( Journaled), GUID scheme. The drive works fine on the other port, boots up properly and works, it's just not recognized on the other port.

完成的

+ sorry you don't get points for answering your own question ;-)

完成的

LOL Rich, I tried a little research before I asked here, but came up dry. After a little experimentation with the keywords, I was able to dig up some info.

完成的

添加一条评论

任天堂 Switch 套装

快速恢复到游戏的状态

购买 Switch 套装

任天堂 Switch 套装

快速恢复到游戏的状态

购买 Switch 套装

1个回答

已选择的解决方案

This article sheds a little light on my situation. I had no idea this was the case with Macs.

Only one of the USB hubs offers a full powered, full speed bus.

Read More http://www.wired.com/gadgetlab/2008/05/t...

这个答案有帮助吗?

得分 3

评论:

That's good to know. Don't suppose you know if that is common practice for laptop manufacturers?

完成的

As a matter of fact it is. It's something that wasn't discovered till 2009, but Macbook Pro's, MacPros, Minis, and PC's, they all have this USB Port issue. Apple kept this quiet, and I think it's bad practice. Many people had issues with Hubs and external HD's because of this. At least documenting it to the consumer instead of causing confusion with peripherals and compatibility concerns would of been nice.

完成的

Just Google, "are all USB Ports equally powered". there are several articles about this.

完成的

+

完成的

+ very interesting

完成的

显示更多的11条评论

添加一条评论

添加你的答案

Majesty 将永远感激不已
浏览统计数据:

过去的24小时: 1

过去的7天: 12

过去的30天: 40

总计 12,877