sdcard – Is there SD card to CF card adapter that supports SD 4.0 (UHS-II)?

I have a micro SD card and a normal SD card which runs on the SD 4.0 specification, allowing high data transfer speeds. I also have a 5D Mark IV, which unfortunately only supports the UHS-I protocol in its SD card slot. It has a CF card that can support much higher data transfer speeds (allowing for better bust mode photo saving), but it is not compatible with my SD/micro SD cards.

Is there any sort of CF to SD or CF to micro-SD adapter which supports SD 4.0 speeds?

Here is a link to an adapter on Amazon. It only supports UHS-I/SD 3.0 and doesn’t supports cards over 32GB. My cards are 64GB or 128GB.

Here is another one that only supports SD 3.0.

The others I’ve seen only supports SD 3.0 speeds as well.

How ubuntu in virtual box with network as internal adapter can access internet

In virtual box I have second FREEBSD OS pfSense , I have setted its network as bridge adapter and second adapter as internal adapter.

So how anathor vm can access internet.
where can I find the theory of it.

Canon FD lens mount adapter for Olympus Pen E-PL1

Will this Lens Mount work with the Canon lenses I have?

YES, It will allow you to mount your FD, or FL, lens’s to your PEN E-PL1 but see note below, I can not speak to functionality as I know nothing about the PEN E-PL1.

From the amazon link.

Note: This is a manual adapter, so lens functions that rely on
electronic communication with the camera body (autofocus, AE metering,
image stabilization, etc.) will be disrupted. Set your exposure
manually or meter using your camera’s Aperture Priority (stop-down)
mode. If your lens does not have a manual aperture control ring, it
will stop down to its smallest f/stop by default. All pictures are for
illustration purposes only. Actual product may vary slightly due to
ongoing improvements in design.

external keyboard – USB-C port not working as a host to use with USB OTG or HDMI adapter

I have a Samsung Galaxy A9 which I’m trying to connect to an external HDMI display by the means of a commonly-found USB-C to HDMI adapter like this one. Connecting the USB-C input “lights up” the adapter, and Android shows the adapter as charging, but it does not work with multiple HDMI cables and monitors.

After searching everywhere with no avail, I noticed that the notification area shows that adapter – briefly – connects and disconnects multiple times before it disconnects permanently (while still showing that the adapter is being charged).

Some screenshots:

Here the USB connector is shown connected (it disconnects soon afterwards, but I couldn’t get a good shot of it) and charging.

Now the device has “disconnected” (I presume?) yet still charging.

I also tried forcing the phone to act as a host of the connection in the settings, but that also fails.

How can I enable USB OTG in my device (if it’s not already enabled)? I take that the device should be able to do this screen sharing since it was produced in 2018, and I’ve seen older devices in videos performing it just as well. What can I do to fix this USB error and enable other things (such as a USB hub or a keyboard) to be used together with the phone?

Similar questions to this one are very old and not quite close, so that’s why I’m asking again.

Many thanks, feedback is appreciated.

android – Generic RecyclerView Adapter in Kotlin

I’ve just finished implementing a Generic RecyclerView adapter in my Android app, written in Kotlin.


import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView

abstract class BaseAdapter<T>(
    private var dataList: ArrayList<T>
) : RecyclerView.Adapter<BaseViewHolder<T>>() {

    abstract fun setViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<T>

    fun swapDataList(dataList: ArrayList<T>) {
        this.dataList = dataList

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<T> {
        return setViewHolder(parent)

    override fun onBindViewHolder(holder: BaseViewHolder<T>, position: Int) {

    override fun getItemCount(): Int = dataList.size


import android.view.View
import androidx.recyclerview.widget.RecyclerView

abstract class BaseViewHolder<T>(override val containerView: View) : RecyclerView.ViewHolder(containerView),
    LayoutContainer {

    abstract fun bind(data: T)


All of my RecyclerView adapters extend BaseAdapter and have an inner ViewHolder class, which extends BaseViewHolder. I’m asking for suggestions and constructive criticism. What could I change to improve the overall performance of my class? Is there a better approach?

android – click on each item in recyclerview adapter

i have this code

enter code here
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {

    val layoutview =
        LayoutInflater.from(parent.context).inflate(R.layout.product_items, parent, false)
    val vh = ViewHolder(layoutview)

    vh.itemView.setOnClickListener {
        val pos = vh.adapterPosition

            val activity = it.context as AppCompatActivity

            val bundle = Bundle()

            val myFragment = ItemDetailsfragment()
            myFragment.arguments = bundle

            val productitem = product(pos)

            bundle.putString("title", productitem.title)

            bundle.putString("price", productitem.price.toString())

            bundle.putString("image", productitem.image.toString())

                .replace(, myFragment)
    return vh

when i want to click on each item it doesnt work …. where of my code is whrong
i want to click on each item to recyclerview and open new fragment … but when i click on items nothing happned .

Apple Monitor Thunderbolt adapter

I have a Mac Screen that doest have any ports, instead having only a thunderbolt 1 cable coming out of the back. i have a non-apple pc that doest have a thunderbolt. i do not want to spend $70 on a good adaptor. Help?

thunderbolt – Cheaper alternative for t-bolt 3 to t-bolt 2 adapter?

Just bought a new iMac with thunderbolt 3 output that I want to connect to my Thunderbolt monitor as a second monitor. So I’m going to need an adapter. The only one I can find is the official Apple adapter for 49 bucks, which is insane. I found a knock off on eBay for 11 bucks but I don’t trust it.

Are there other legit adapters out there?

hard drive – SDD with adapter is not displayed on startup disks list

Hello i have problem with install osx Catalina on my Middle 2013 Air Macbook (A1466). I create bootable USB drive with osx Catalina and enter to boot menu. In disk utility i see my ssd (connected with adapter) and i format it as GUID scheme and Max OS Extended format. After that install Catalina on it and when macbook restarted still see ? sign folder. When i try choose my ssd as startup disk i cannot see it on the list. Have u any idea what is going wrong?

lightstands – Which stand or adapter for Colorspike light fixture?

I have these ColorSpike lights that I want to put on a stand. They come with a stand adapter that ends with a 5/8″ male stud. So now I am confused: apparently, usually these studs appear on the stands, not the lights.

So which kind of light stand or adapter should I buy? I tried to look at all the light stand accessories at B&H, but I could not find a solution and I am really confused

In the photo, I hold the ColorSpike fixture in front of a screen that shows the top of a typical stand that I found online.

enter image description here