usb | KC's Blog https://www.kjctech.net Tue, 24 Jan 2023 18:21:08 +0000 en-US hourly 1 https://i0.wp.com/www.kjctech.net/wp-content/uploads/2016/12/cropped-KC-Logo.png?fit=32%2C32&ssl=1 usb | KC's Blog https://www.kjctech.net 32 32 24634607 Yoga 3 Pro’s 2-in-1 Charging Port https://www.kjctech.net/yoga-3-pros-2-in-1-charging-port/?utm_source=rss&utm_medium=rss&utm_campaign=yoga-3-pros-2-in-1-charging-port https://www.kjctech.net/yoga-3-pros-2-in-1-charging-port/#comments Fri, 27 Mar 2015 23:50:47 +0000 http://www.kjctech.net/?p=2699 Aside other nice things about the new Yoga 3 Pro laptop from Lenovo, I am quite fascinated about its charging port that combines both USB and charging port into one. The power adapter that comes with the laptop has a special charging connector that has two extra pins on each side, matching two extra pins on the Yoga’s charging port. […]

The post Yoga 3 Pro’s 2-in-1 Charging Port first appeared on KC's Blog.]]> Aside other nice things about the new Yoga 3 Pro laptop from Lenovo, I am quite fascinated about its charging port that combines both USB and charging port into one.

Yoga 3 Charging Port

The power adapter that comes with the laptop has a special charging connector that has two extra pins on each side, matching two extra pins on the Yoga’s charging port. The extra pins make a connection when the charging cord is plugged into the laptop telling laptop that it’s time to feed you more juice. Because of that, you cannot use a regular USB cable to charge the laptop. When a regular USB cord is plugged in, the charging port on Yoga then acts like a regular USB 2.0 port.

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And because it’s also colored as yellow, meaning that it’s an Always-On port that supplies power to the gadget even while in sleep mode or off.

Yoga 3 requires 2A at 20V to power up. So if you need an additional power adapter for traveling, look at 40W Lenovo AC adapter in their accessories section. It’s so popular right now that the back order is on 6 weeks. In addition to 2A at 20V, the 40W power adapter also supplies 2A at 5.2V that is enough to charge a phone and tablet.

The post Yoga 3 Pro’s 2-in-1 Charging Port first appeared on KC's Blog.]]> https://www.kjctech.net/yoga-3-pros-2-in-1-charging-port/feed/ 3 2699 Boot VMware ESXi from a USB Flash Drive https://www.kjctech.net/boot-vmware-esxi-from-a-usb-flash-drive/?utm_source=rss&utm_medium=rss&utm_campaign=boot-vmware-esxi-from-a-usb-flash-drive https://www.kjctech.net/boot-vmware-esxi-from-a-usb-flash-drive/#comments Fri, 24 Oct 2008 13:42:56 +0000 http://kjctech.net/blog/archive/2008/10/24/boot-vmware-esxi-from-a-usb-flash-drive.aspx I came cross this idea early this morning when I saw a post in the forum I am usually on.  One guy mentioned that the ESXi serve he’s running has no hard drives at all, instead it boots from a USB key and links to the SAN afterwards.  Very good idea.  I wasn’t aware of such option as ESX server […]

The post Boot VMware ESXi from a USB Flash Drive first appeared on KC's Blog.]]> I came cross this idea early this morning when I saw a post in the forum I am usually on.  One guy mentioned that the ESXi serve he’s running has no hard drives at all, instead it boots from a USB key and links to the SAN afterwards.  Very good idea.  I wasn’t aware of such option as ESX server doesn’t have such thing that you can run an ESX server off a removable USB flash drive.  So I followed the instruction I found from Google, and did on one of my test machine.  No surprise, it works like a charm.

Tools that require to finish the work:

  • At least 1G USB flash drive
  • Virtual CD mounting tool, i.e. Daemont Tools
  • WinImage to build the image to USB storage.

Steps to make the bootable ESX Server 3i USB flash drive:

  1. Download ESX Server 3i Installable ISO
  2. Extract INSTALL.TGZ from the root directory of the ISO image using the Virtual CD mounting tool.
  3. Extract /usr/lib/vmware/installer/VMware-VMvisor-big-3.5.0-xxxxx.i386.dd.bz2 from INSTALL.TGZ
  4. Extract VMware-VMvisor-big-3.5.0-xxxxx.i386.dd from VMware-VMvisor-big-3.5.0-xxxxx.i386.dd.bz2
  5. Attach the USB flash drive and make sure you no longer need the data on it
  6. Use WinImage to transfer VMware-VMvisor-big-3.5.0-xxxxx.i386.dd to the USB flash drive
    1. Disk->Restore Virtual Hard Disk image on physical drive…
    2. Select the USB flash drive (Warning: If you select the wrong disk you will lose data!)
    3. Select the image file VMware-VMvisor-big-3.5.0-xxxxx.i386.dd
    4. Confirm the warning message
    5. Wait for the transfer to complete
  7. Unplug the USB flash drive (Warning: If you forget to unplug the flash drive from the PC you might lose the data on your hard drives the next time you boot!)
  8. Attach the USB flash drive to the machine you want to boot (Warning: If ESX Server 3i recognizes local drives, you might lose the data on it, so make sure you don´t need it anymore or unplug all hard drives!)
  9. Turn the machine on and make sure the USB flash drive is selected as boot device
  10. Enjoy.

Notes:

I failed to so on my Vista machine but had no problem on XP.  And the machine you want to boot from must have the option to make the USB flash drive as the boot device.

You can also watch the video to see how to do it in action.

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