comments:
Hmm that's good, and somewhat surprising. I would be interested in seeing how well it does when you have a heavy load on it. I would probably, at the very least, cut a hole or two in the back of the cabinet for some exhaust fans just to be safe. I have a 10" mini rack, and I put two 80 mm PWM fans with a cheap PWM controller just for some extra ventilation for the switch and servers in it. The idle temps were totally fine, but I didn't want to risk them getting really high with a heavy load on one or more of the servers. Plus, the switch also has a 10 Gb/s SFP+ Ethernet transceiver in it, and those get quite hot. Edit: It shouldn't be too difficult to do. You can trace out a template from a fan on a piece of paper, and cut it out with a handheld Dremel. The sheet metal those cabinets are made from is pretty thin stuff, usually. Also, I went ahead and found that PWM Controller I got in case you are interested. You can power it with any old USB type-C brick, or a 12V DC wall-wart which is what I did since I have a box full of them. 😆
I use an Owl Tree fan controller with a 12 volt input from an old hard drive power brick. The speed control is nice because it has discreet settings and lights up an LED for each one. I just run the fans on max though https://www.amazon.com/dp/B0FPCTW57S?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1 If it's a portable AC unit blowing air out, you won't be able to use the same hose because the AC will push air back to the printer. You can probably make an extra hole on the blocker, or wall, or whatever the AC vent hose goes to.