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I've been lurking here for a while trying to learn and feel like I have decent handle on things but I have a number of boards that I'm not sure about.

I'm thinking some these will go High Telecom and some maybe Low Telecom but I want to get other opinions. A couple might even be Peripheral High. The board with all of the gold pins I am definitely not sure about. I know the brackets need to come off. I grabbed the pics while the drill battery was charging so I drill the rivets out.

On all of the boards with the large, white connectors, the connectors are full of gold plated pins.

Here is the fist batch.

These are tough evaluations for me. In this post. I was looking for gold pins and quality and quanity of ICs to place the board into or out of a category.
#1 Remove the transformer. High Telecom. You have gold pins and healthy ICs
#2 Remove T2. The component labled XFMRS. Also the bright yellow component next to U27. Read what is on the component. It states. It has a lithium cell. That must be removed before selling to Boardsort.
#3 Remove transformer. Submit High Telecom.
#4 Remove transformer. High Peripheral. You have nice ICs but no population.
#5 Remove transformer. If that black object with the label PAC OPTO. I would remove it. Whether metal or plastic. Submit as High Peripheral.
#6 High Telecom. The board is clean of junk. Nice quality ICs. Good. Tants.
#7 High Peripheral. Just doesn't have gold contacts.
Next. The board without a label. Submit as Backplane. Don't remove anything.
Overall. Again. These are tough evaluations for me. Being so borderline between categories. I focused on quanity of gold contacts. Quanity and quality of ICs. More experienced e-scrappers can look deeper into a boards value.
Here to learn like everybody else.

My evaluations are my own opinion.

Last two pictures are the same board, yes?

I would pull as many of the screws/steel off as you're able just to minimize any risk of dropping out of backplane grade.

Whiskers seems to have covered everything, but I'll add one note:

#5 that pacopto component looks to be fiber optic, which can be of value (I'm not certain though).

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Here to learn more so I can recycle more
My grades are my own opinion and not an official grade from Boardsort

Yes, #5 is a fiber optic SC connector.

The last 2 pics are the same board. Pins on the top side and the other connectors on the bottom.

All of these came out of telecom transmission equipment.