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Have an APC RT 8000 that will not come on.  There are no tripped circuit breakers, there is current at the wall outlet, all of the power switches are in the "On" position.  
Where do I begin to troubleshoot this problem
Hi Experts

Could you point if a SSD (solid state drive) HD - in general, since I don't have its specifications by now correctly works on Windows Server 2003?

Thanks in advance
Today I used Facebook Live with Wirecast's presets of 4 Mbps and 30 fps. In an hour I had over 65000 drops frames. My camera is set to 29.97 which I guess explains some of the dropped frames, but when I viewed my completed video it was only 36 minutes and the audio was at least 3 minutes behind the video. Is this because I don't have enough bandwidth or is there another problem with my computer? I never noticed my processor nor memory maxxing out.
Hello Experts,

Anyone can help me on how to properly configure this Access Control Board? Most of the problem lies on the drop bolt on not properly functioning.

I would like  to have this access control board and the zoter drop bolt function properly.

I have read the manuals, diagrams and watched tutorials on web but it doesn't works as it intended.

And just to let you know, I am new to this technology so I hope the steps for solving are fairly simple.

Drop Bolt, I think the main problem lies in this one. I have not seen any good wiring with this drop bolt model.

Access Control:


A. I followed this manual guide with a bit of difference due to the drop bolt(+12V to NO) but doesnt work with the software and card reader.
B. I followed this wiring but it has a problem when the magnetic plate is on the lock sensor...It wont open at all regardless of card readers, exit button to software, however if I remove the magnetic plate it works, except for the automatic lock its like it based the locking on the timer instead of detecting the magnetic plate .
C. this is a rough sketch of the best wiring I have, Its the same as Wiring B however the Exit Button works now and its Locking is based on detecting the magnetic plate instead of timer like Wiring B.
I have made a video for more clear details. In this video I used the Wiring B.
Electric Drop Bolt

I would really appreciate if anyone can assist me on this.
Need an HDMI switch for two inputs to one output

I have one display and two computer, a MacBook and a Windows PC. So, I am looking at this device, since it gives me an option to even add a third PC:


My MacBook uses a Thurderbird port with a converter to HDMI.

My questyion is whether I would be imposing any capacity limits that could impact responsiveness on the display.

There arwe other options here, but I like the idea of three inputs and one output.


What are software and hardware requirements for a embedded system mounted on a rifle scope?

I need to specify detailed image processing and graphics overlay requirements for state of the art rifle scope?  I'm looking to specify the entire pipeline starting from image sensor to display.  The specification needs to be comprehensive.  It'll be used to select resources such as Integrated circuits, knobs, buttons, memory, etc..  The specification will also drive detailed design document and will be used to validate the final product.

Image sensor needs to be monochrome, with sufficient resolution, high dynamic range.  I also need to specify image sensor calibration but what is the need to calibrate image sensor?  How calibration works in a typical image sensor from BAE Systems?

The specification should include Reset Initialization specification, Normal Operation Specification, and Fault Operation specification.
I have a DJI Spark Drone. It was working perfectly. It then notified me that it needed to update the firmware. I have spent several hours trying to follow HORRIBLE instructions that might have been translated from Chinese to Mongoloid to pig latin then to English. There seem to be several different interpretations of the procedure. Does any Expert own a Spark that can give me the WORKING instructions on how to accomplish the update? I am requesting only a Spark owner rather than simply providing internet instructions. I have tried several and none seem to work. This might be out of the scope of Experts Exchange, but it does not hurt to ask. It just takes the right combination of knowing where to hook up interconnect cables to and from what. I DO have the remote controller. I use a Mini Ipad for the viewing and connection to my wifi. I have high speed internet so that should not be any problem.
my computer is only using 3gb of RAM,  but there is 6gb installed. it says only 3gb is usable. why might this be and how can i fix it?

motherboard- Gigabyte technology x58a-udr3
DD3 memory.
i have intel cpu i7 920 @2.67 for a chip
15 pin connector on the back of the Toshiba 20 inch monitor. It's labelled as RGB. When connected to a computer via the VGA port there is a color picture but nothing but many moving lines so unless there is some setting it's trash.

Anyone on RGB? The three settings on the front of the unit are TV, video, or RGB.
Hello folks, need another pair of eyes to check my DC Win2016 hardware specs.  Only for AD purposes box.  DC, DHCP, DNS.  It'll be sitting separately from VM environment and crunching only AD specific purposes.  

HPE ProLiant DL360 Gen10 Performance - rack-mountable -Xeon Silver 4110 2. - x1
Intel Xeon Silver 4110 / 2.1 GHz processor- x1
HPE SmartMemory - DDR4 - 16 GB - DIMM 288-pin -registered - x1
HPE Read Intensive - solid state drive - 480 GB - SATA 6Gb/s - x2
HPE Foundation Care 24x7 Service - extended service agreement - 3 years - o - x1
Hardware Option(s) Install into a Server (CDW ConfigurationServices) - x1
Lately I have not been able to get any Lenovo 8th gen i7 PCs from my distributor.  The only i7 model available at a decent price right now has a 7th gen i7-7700T with a Passmark CPU speed rating of 9255.

But they do have a model in stock with an 8th gen i5-8400 speed rated at 11624.

Both come with an SSD and Win10 Pro.  For my customers general office use, can I safely assume that this i5 system will run faster overall than the i7--due to the 25% faster CPU speed?  If not, why not?  TIA
Just met with carrier tech.  He left me bunch of blue sc-lc fiber cables.
 Mentioned blue is a new yellow and aqua is a new orange.   Better throughput and better flex.
 is there a specs somewhere to learn about these new cables?
Hi Experts

Could you point a Windows Server version that could be installed at this hardware?

Win7 doesn't have a good performance on my particular case.

Thanks in advance!
I am trying to use a ASUS M5A78L-M Plus/USB3 motherboard along with Wirecast and was told that my built-in graphics card, the Radeon 3000, will only support DirectX 10.  I need at least DirectX 11 to run Wirecast, so I just want to make sure that I understand this correctly.  

It seems the only expansion slots on this machine are:
1 x PCIe 2.0 x16
1 x PCIe 2.0 x1
1 x PCI

Is there even an external PCI graphics card that can run DirectX 11 or do I just build another computer?
I'm looking into RAID solutions for a very large file server (70+TB, ONLY serving NFS and CIFS). I know using ZFS raid on top of hardware raid is generally contraindicated, however I find myself in an unusual situation.

My personal preference would be to setup large `RAID-51` virtual disks. I.e Two mirrored RAID5, with each RAID5 having 9 data + 1 hotspare (so we don't lose TOO much storage space). This eases my administrative paranoia by having the data mirrored on two different drive chassis, while allowing for 1 disk failure in each mirror set before a crisis hits.

HOWEVER this question stems from the fact, that we have existing hardware RAID controllers (LSI Megaraid integrated disk chassis + server), licensed ONLY for RAID5 and 6. We also have an existing ZFS file system, which is intended (but not yet configured) to provide HA using RFS-1.

The suggestion is to use the hardware raid to create two, equally sized RAID5 virtual disks on each chassis. These two RAID5 virtual disks are then presented to their respective servers as /dev/sdx.

Then use ZFS + RFS-1 to mirror those two virtual disks as an HA mirror set (see image)

Is this a good idea, a bad idea, or just an ugly (but usable) configuration.

Are there better solutions?

User's USB external drive does not automatically mount when connected to a MacBook Pro
When I run Disk Utility, I am able to get the drive to mount after I run disk repair, and then automatically mount.
Disk Utility shows that the drive is in the unmounted state after being connected to the MacBook Pro

What could be preventing the mounting?
Is a Mac OS upgrade required?
Is the drive damaged?
Are the Mac's USB ports a problem?

User has a MacBook Pro with Mac OS X 10.11.6
MacBook Pro Retina 2.2GHz Intel i7  - Mid 2014

Backup drive is Seagate Ultra Slim PL Media
1 TB, USB connection
Partition Map is Master Boot Record

Time Machine accepted this MBR drive as a backup drive
Would MBR partition keep the drive from being mounted?
I have a chip/drive that was supplied w/vacation photos from the vacation co.

Problem is that the drive does not fit any of the slots on my universal adapter.
Can someone take a look at the attached pic(s) and let me know what type of adapter I need ?

Any help is appreciated.
ChipDrive pic
backed up hardware unable to do the back up , alerted NTFS format ? Can it be used as restore reliable ?
I have a Windows 10 Professional 64bit Workstation (Dell Optiplex 9020).  Recently upgraded to Windows 10 Professional 64bit.  During the upgrade process a Windows 10 DVD was used for the upgrade/installation process.  After the initial installation, additional svcpaks/upgrds were accomplished via the network with Windows Update.  Somewhere in the process the DVD/CD ROM got uninstalled and I can NOT get it re-installed on the PC !!!  I have tried everything I can think of to get the DVD to re-install.  The error message I get within Device Manager is - " Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19) "  I have tried 3 different DVD's and none of them will load.  I tried attaching a USB DVD ROM and it loads with the same error message !!!  I am at my wits end ......  DVD I am using is a - Matshita DVD +-RW SW830
I only know a little bit about LCD screens and I was hoping someone could answer this question.  I have an LCD I need to replace for a customer, part NV156FHM-N48.  The cost on it is significantly higher than if I was to purchase NV156FHM-N46.  Can someone tell me if I can use either screen and what the difference is?  They are both IPS 30 pin EDP.  The only difference I just now see is the N48 does not have screw mounts.  Is there any other difference?
I'm using esxi free 6.5 to host a vm. The vm was working fine until we had a power outage. Now when I try to power on the vm it stuck at 0% for a long time (more than 10 minutes)
I need to cancel  the power on and power on again.  it makes the power on process more than 20 minutes .  any advice?
I have inherited a Megaraid SAS 2208 RAID (24 drive slots) with two additional external enclosures (one 12 slot, and one 24 slot)

The problem is; the 12 slot enclosure is demonstrating hardware problems. It is well out of warranty and has no support contract.

I'm considering buying a new enclosure and moving the disks. However, I don't know how to recreate the RAID6 virtual drive WITHOUT losing the data on the disks.

Is this even possible?
I have a Powershell script find multiple servers, but I wanted to see if it can't be modified to also find What the OS is, Specs of Hardware, and VM Server or Physical.

I know this may work out better with SCCM, but wanted to see if I can find it via Powershell as well.

Thank you,

$strCategory = "computer" 
$strOperatingSystem = "Windows*Server*" 
$objDomain = New-Object System.DirectoryServices.DirectoryEntry 
$objSearcher = New-Object System.DirectoryServices.DirectorySearcher 
$objSearcher.SearchRoot = $objDomain 
$objSearcher.Filter = ("OperatingSystem=$strOperatingSystem") 
$colProplist = "name" 
foreach ($i in $colPropList){$objSearcher.PropertiesToLoad.Add($i)} 
$colResults = $objSearcher.FindAll() 
foreach ($objResult in $colResults) 
    $objComputer = $objResult.Properties;  

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I need to analyze the traffic from my office (Not just a single Computer) to Internet.

I mean, i need to know which one (COMP) consume my line and which program

I have issues with the bandwidth of the line and will be very helpfull to have a hardware o something between my office and the internet to take control on all the traffic.






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.