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I hot-swapped a drive in a Supermicro chassis (D-1541) and the drive light next to it is blinking yellow now and inaccessible to vSphere.  How do I get that to go back to normal?

Ensure you’re charging the right price for your IT
Ensure you’re charging the right price for your IT

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I need to purchase 30-50 18650 Li-ion batteries.  There is such an enormous range of specifications for this cell that it is mind boggling. I see specs from 1000 mAh up to 6000 mAh. I find that difficult to believe. I am looking for longevity and quality more than capacity. These will be used in a transmitter sending telemetry data. The transmitter will be active for 4 minutes at a time drawing 1.0 amps. Has any Expert seen a brand comparison done that is not manufacturer sponsored rating several different brands? It would be great to see some impartial ratings. I do not want a cell that is very low for obvious reasons nor do I want to push the limit of capacity and sacrifice longevity. Any suggestions would be welcomed. I prefer to buy this type of item either from Amazon or DigiKey.
I can only use two of the three monitors at a time.

This is a Win7 Pro desktop PC with a GEForce 210 video card, with a VGA, HDMI, and DVI connector.  The primary monitor is connected to the HDMI port.   I have a DVI-VGA converter plugged into the DVI port.  If I connect all three monitors, one of the non-primary monitors will be black.  The 3rd monitor does appear on the Windows Screen resolution setup screen, but its icon is darker grey, and the Resolution and Orientation fields are greyed out.  The Multiple displays field says Disconnect this display, and no matter what I change it to from the dropdown, it ignores me and goes back to Disconnect this display.  

The Nvidia control panel only sees two monitors at a time, i.e. never three like Windows does, but if I disconnect one of the side monitors, then the Nvidia control panel "sees" the other side monitors and displays its model name correctly.  Note that I just now downloaded the latest driver for the GEForce 210 and rebooted.

Is this card incapable of running three monitors, or am I doing something wrong?  TIA
I run across business customers who want to use multiple monitors, but their computers don't offer enough video ports and/or the wrong types.  Typically they are on Win10 or Win7.

I can install a video card, or I can connect multiple USB adapters, such as USB- to-HDMI.  Keeping in mind that this is just for small office use, I need guidance as to whether one of these methods is the definite "best choice"--and why.  TIA
The customer wants to use three new monitors for the office computer, for typical office apps.  All it has on the motherboard is one VGA and one DisplayPort, so I wanted to get a video card that would support all three monitors using the HDMI and/or DP ports on the monitors--which is all they have, being large and new.  But every reasonably priced video card I look at has VGA, DP, and DVI--and of course VGA and DVI do me no good in this case.

Is there such a thing as a reasonably priced video card that has all DP and/or HDMI outputs?  Low profile would be even better.  Again, I'm not looking for hi-res graphics or gaming features.  Rather, I'm just trying to get access to three "modern" video ports for this PC.  

Or, should I buy three USB HDMI video adapter dongles--and expect that to look good and for Windows 7 to manage all three screens properly?  TIA
Lenovo T430s. I've noticed it is rather warm under the top left of the computer. Even though I am using it in front of a fan. It's cooled down some as the fan blows. Actually it is the top left side more than the bottom and also the top left rear. What parts are inside the top left of the laptop? Thanks
Hello and Good Afternoon Everyone,

          I am wondering if it is possible to locate and purchase a handheld instrument that can use laser light to access measurements like height, width, and depth and transmit this information digitally back to its display.  I am not sure if such a device exists commercially, but, I know if it does, someone on this forum would definitely know for sure.  

          Any shared thoughts or possible leads regarding this interest will be greatly appreciated.

           Thank you


I need to know the difference between
-  HPE 128GB (1x128GB) Octal Rank x4 DDR4-2933 CAS-24-21-21 Load Reduced 3DS Smart Memory Kit
- HPE 128GB (1x128GB) Octal Rank x4 DDR4-2666 CAS-22-19-19 3DS Load Reduced Memory Kit

I mean which one has better performance

Distributed processing, space telescopes and super-computer speeds

I read that IBM sold a super-computer called Summit in June 2018 that could perform 200 Trillion transactions per second.


How many average Windows laptops are need to rival that kind of power?

And if that average Windows laptop is used in a business environment, what kind of hardware utilization is there to:
1) Run Windows
2) Perform ordinary office uses, like email, word processing, running a virtual terminal?

Secondly, what can you tell me about the processing power of a distributed model where thousands of PC's perform calculations when it detects idle time?

There is a famous space telescope which does this. Please remind me of the name of that system.


Strange thing today.  My computer monitor messed up and just replaced it with a temp monitor.  All works fine but Netflix won't.  It gives error:

Error code: U7361-1255-C00D7159

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When searching the error, I have:

Netflix Error H7361-1255-C00D7159
If you experience the error code H7361-1255-C00D7159 on your computer, it's typically caused by using an unsupported video output method, such as a Wireless Display Adapter. Netflix is only compatible with video output methods that support content protection (DRM). To immediately stream on your computer, follow the troubleshooting steps below. To successfully watch Netflix through a video output method, contact your device manufacturer to learn which devices support DRM protection.

The strange thing is that I only change the monitor.  If I move the Netflix apps to the notebook (my computer is a notebook with an external monitor connected), it works, so it seems it's the monitor.

The setup is:
- the notebook has an USB connector
- in that connector is a Insignia USB to Hdmi and an USB cable connected to the monitor.  I had this same setup with my old monitor.

Please let me know whats going on or is it a configuration.
OWASP: Threats Fundamentals
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OWASP: Threats Fundamentals

Learn the top ten threats that are present in modern web-application development and how to protect your business from them.

How-to identify, diagnose and prove that the power surges that were caused by an affiliate of the power company destroyed my electronics. All my electonics have very strange behaviors. They are all damaged. As i'm sure all the other electical devices of all 150+ homes that were also plugged in are damaged as well. (Mobile Home Park)  I would be needing to be able to prove this.

So my question is: I'm attempting to prove this occurred, and I'm looking for the proper authorities to take this issue to. Where would I go about that?
NXP LPC11E68JBD48E Microcontroller I2C1 is Master.   I2C1 is in Master Transmitter Mode.
I2C1 peripheral is in chapter 13.  http://www.mouser.com/ds/2/302/UM10732-315822.pdf
NXP PCAL6416A I2C 16-bit I/O Expander is Slave. https://www.nxp.com/docs/en/data-sheet/PCAL6416A.pdf.

Master reads one byte from slave port 0.  On one board all Eight bits are logic 1's as expected.  On the other board Seven bits are logic 1's as expected
but bit 2 is logic 0.  The input pin connected to bit 2 is pulled up to 3.3V but it's logic 0 on I2C data bus.  Why?

                              D7 D6 D5 D4 D3 D2 D1 D0
Expected              1    1    1    1    1    1   1    1
One board           1    1    1    1    1    1   1    1
Another board    1    1    1    1    1    0   1    1

Explanation/Questions on attached scope screenshots:  Master sends slave address 0100 001(A6-A0), followed by write bit(logic 0).  Slave responds with ACK(logic 0).
Then, master send command byte 0x00(read byte from Input port 0).
Master sends start bit, followed by slave address, followed by read bit(logic 1).  Slave sends ACK.
On one board, slave send 0xFF as expected.  On other board, slave sends 0xFB, not expected. Master follow with a NAK.  Slave pulls data bus low before the stop
condition?  Why slave pulls data bus low?

The primary question is why is bit 2 logic 0 on the I2C bus when it's pulled up to 3.3V ?

Are we setting the I2C device properly?
INT pin(active low) is floating.

/* …
i have seen the incoming cables from outside connected to the mccb device here  directly from the meter panel and its rated under 63a, my question here is I  don't know how much  amp it comes from the  service line which only stated 415v incoming. so this mccb 63a  user to convert the volt from outside becomes 63a or to only allow my house getting  accces with 63a ?
Hello and Good Morning Everyone,

         I am wondering if it is possible for new and unused external USB flash drives to become defective or bad over time.  The reason I ask is because I am considering buying a pack of external USB flash drives for quick and convenient data backup and restore purposes.   Realizing there might be some new ones which might not get used for several months or even a year, I do not want to take a chance on them going bad simply because of non-use.

         Any thoughts shared to this question will be appreciated.

         Thank you

Secure Wipe SSD Drive

I've seen a lot of things on the web and searched here. I just want something succinct and usable.

I've stored up about three dozen SSD's and need to securely wipe them.

Does this plan sound good?  Additions?

Take one of the drives, initialize and format it
Activate Bitlocker on the drive
Fill up drive with files from \windows\system32\*.exe
Dupe this drive over the remaining drives of that same size to overwrite all sectors (hopefully)
          (This way individual sectors won't still have any data)
Use Parted Magic or Crucial's SSD software Erase Drive to low level initialize the disk
We are following instructions to burn to disc one (1) mp4 video. The first program did create the audio_ts and video_ts folders
In the image you see a mention of a file system. It also mentions using your own favorite burning software. Efforts to burn these two files (audio_ts and video_ts has failed.
What is this file system?
What other programs can you suggest. It's one video to play before a group of people so we need the video to play on a table top player and I try not to pay for a program since it's only one video needed. Thanks.
The burner recommended along side the above program that created the file structure, was to locate the folders and move them to another folder. Here they are and the chosen burner is getting errors when trying to just add the folders to the burning program.
I am upgrading several of our districts admin computers and am installing PCIe Internal NVME M.2 Drives directly to the motherboards.  In the past I created an image and then duplicated the drives to install into other systems so that I didn't have to manually install and configure each and every system.  I just had to re-enter the Microsoft License Key for the OS and Office suite.  Does anyone know of a way to duplicate these drives?  I used a 14 port Kangaroo unit to duplicate SATA drives for my older system.......just wondering if there is a piece of hardware out there that can do the same thing to the PCIe M.2 drives.  I tried using an M.2 to SATA adapter but my duplicator errored out each time stating it couldn't find a Source drive.
How Much Work from the Fastest Super Computer in the World?

I read that IBM delivered Summit in June 2018 to the Dept. of Energy which, at that time, was the fastest in the world. Any faster one since?

I read 200 Trillion computations per second.

IF Watson were to run on that machine, how many computations might there be for one question on Jeopardy? It's an impossible question to ask, but I am just trying to get a scale that I can compare to that 200 Trillion capacity in one second.

And when it comes to latency caused by waiting for some external process, consider that zero.

This is logical since, since the calculations for to determine the best answer might require many seconds, yet I want to know the aggregate amount of computations  needed so I can guesstimate how many such average answers such a system (Watson + Summit) might one second's capacity consist of.

Hello and Good Evening Everyone,

      I am wondering if it is possible to locate a vintage 1960's Packard Bell AR-851 radio for $100 or less.   While I was able to find one on eBay, it is very high at a price above $700.  That said I would like to locate one at a much more affordable price.  Unfortunately, my exhaustive searches have come up with nothing with respect to what I would like to pay for one.

       If anyone could possibly find a Packard Bell AR-851 radio online for sale at $100 or less, I will certainly be interested in checking it out and purchasing it.  Seeing that this will be a very difficult search based upon the criteria mentioned, I will understand if it fails.

       Thanks in advance for any attention that might be given to this quest.

C++ 11 Fundamentals
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C++ 11 Fundamentals

This course will introduce you to C++ 11 and teach you about syntax fundamentals.

Hello, All.

On my S5000PAL Server Board, it has the

Intel® RMM NIC Connector

My question is...
What is the name/model number of the WHITE Ribbon that connects to this card and to the board?
So I can attempt to find it on eBay or another site.

All I need is the white ribbon and I will be good to go.
Any help on this would be great.


This shows the connector closer up. J2A1
Getting these on every startup. No new hardware or software installed.

Log Name:      Microsoft-Windows-DeviceSetupManager/Admin
Source:        Microsoft-Windows-DeviceSetupManager
Date:          9/16/2019 3:45:47 PM
Event ID:      200
Task Category: None
Level:         Warning
User:          SYSTEM
Computer:      MN-PC
A connection to the Windows Update service could not be established.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
    <Provider Name="Microsoft-Windows-DeviceSetupManager" Guid="{fcbb06bb-6a2a-46e3-abaa-246cb4e508b2}" />
    <TimeCreated SystemTime="2019-09-16T19:45:47.239640500Z" />
    <Correlation />
    <Execution ProcessID="1360" ThreadID="2608" />
    <Security UserID="S-1-5-18" />
Log Name:      Microsoft-Windows-DeviceSetupManager/Admin
Source:        Microsoft-Windows-DeviceSetupManager
Date:          9/16/2019 3:45:47 PM
Event ID:    [b]  202[/b]
Task Category: None
Level:         Warning
User:          SYSTEM

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Is a Bausch & Lomb eye glass cleaner ok to use to clean the screen on a cell phone?
I'm considering the purchase of at least 40 ThinkCentre Tiny-in-One units.

M720 has Core i5 8400 1.7Ghz  verses M15 2nd Gen AMD Ryzen 5 Pro 2400GE 3.2Ghz  

$4000.00 dollar difference in overall price.

Would $4000.00 be worth it or a waste and why?
Need ideas to make a near 0 cost ladder for wooden bunk bed. I can get free 2 x 4's.
The old bed was metal and full size on the bottom so the ladder was made to accommodate a twin over a full.
That ladder broke in some way and I do not have access to it to see if it can be used in some way on the wooden bunk.
The new bed is twin over twin. I'm not sure if one with hooks on the top will work or not. There is plenty of wood on these frames for drilling holes and adding bolts.
Need Help understanding Mosfet IXTL2N450 .   It is a High Voltage N-Channel Mosfet with a low gate.

I am new to mosfets so please bear with me.  

I set up a basic circuit on a bread board to understand this Fet better.  

I am using 5v because it is easier to work with than my 2kv power supply I intend to use after understanding this fet better.

Problem:  When I apply 5v+ to the drain I am measuring 5v+ at the Source.  When I apply 5v+ to the gate it does nothing.... confused.  

Why is the drain 5v passing to the source without the gate voltage being applied?

Please school me. Thank you.







Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.