Rear face plate

[Bob]

On the back of the case is a tin(?) plate that the m/b slides into.
The plate is where you connect all the i/o connections, such as,
audio, video, mouse, keyboard, basically all your connections to
the exterior items you connect. The plate itself has small tabs for
each connection.

My question is: do these tabs push against the m/b parts, or do
they get bent out so the m/b parts slip into them and they would be
on the side of the m/b connections.

Thank you, in advance.
Bob

 

[Paul]

On the back of the case is a tin(?) plate that the m/b slides into.
The plate is where you connect all the i/o connections, such as,
audio, video, mouse, keyboard, basically all your connections to
the exterior items you connect. The plate itself has small tabs for
each connection.

My question is: do these tabs push against the m/b parts, or do
they get bent out so the m/b parts slip into them and they would be
on the side of the m/b connections.

Thank you, in advance.
Bob

They are all meant to press against the connectors. The short
tabs press against the face of the connectors. The long tabs
can press on the top of a connector stack. While you can bend
the hell out of them, so they no longer annoy you, that kind of
defeats the purpose. I tip the motherboard up on edge, and
slide it under the long tabs.

A main benefit of the plate, is it probably helps move static
discharge partially into the computer case, instead of letting
the discharge flow through the motherboard. While it might
look like the computer case is being kept "RF tight" by the use
of such fittings, I would think from an RF perspective, the
computer case would leak like a sieve. That is why computer
components are equipped with spread spectrum settings, to make
meeting FCC emission specs easier. There are enough other holes
in the computer case, to make it not very effective as an EMI
barrier.

Paul

 

[BigJim]

some of the tabs have to be bent so the usb will fit but most just
create a little tension

 

[Dale Brisket]

On the back of the case is a tin(?) plate that the m/b slides into. The
plate is where you connect all the i/o connections, such as, audio, video,
mouse, keyboard, basically all your connections to the exterior items you
connect. The plate itself has small tabs for each connection.

My question is: do these tabs push against the m/b parts, or do they get
bent out so the m/b parts slip into them and they would be on the side of
the m/b connections.

Thank you, in advance.
Bob

While most of them just press against their connectors, some (on mine, the
LAN ports) need to be bent up so you can actually plug a cable in.

 

[Bob]

Thank you, and the other guys that answered.
Bob

 

[David Maynard]

They are all meant to press against the connectors. The short
tabs press against the face of the connectors. The long tabs
can press on the top of a connector stack. While you can bend
the hell out of them, so they no longer annoy you, that kind of
defeats the purpose. I tip the motherboard up on edge, and
slide it under the long tabs.

A main benefit of the plate, is it probably helps move static
discharge partially into the computer case, instead of letting
the discharge flow through the motherboard. While it might
look like the computer case is being kept "RF tight" by the use
of such fittings, I would think from an RF perspective, the
computer case would leak like a sieve. That is why computer
components are equipped with spread spectrum settings, to make
meeting FCC emission specs easier. There are enough other holes
in the computer case, to make it not very effective as an EMI
barrier.

EMI isn't water, nor air, and is blocked if the 'holes' are sufficiently
small compared to the wavelength of the signals you need to block and a
number of other things, like the thickness of the material the 'hole' is in.

On the other side of the coil, wire lengths act like antennas, which means
you want your EMI suppression circuits to shunt to the EMI shield in as
short a distance as possible.

At any rate, the metal fingers are there for EMI suppression. They contact
the connectors so they become a part of the case EMI shielding, making the
'hole' smaller, and are the shortest path to the case shield for the EMI
circuitry.