Lenovo Tiny Fan Shroud

thingiverse

I've been wanting to set up a Tiny cluster using my M720q model computers for a while, and with that have them use 10G networking. It seems that many people do use 10G network cards in these machines with varying success, the only issue I've seen that was a constant was the amount of heat build up that can occur. I figured I'd give a whack at designing something in Fusion 360 to help this issue. The goal was to make this as easy to make as possible, if there are any improvements you think that can be made, please don't hesitate to comment. # Warning **PLEASE PRINT OFF THE SHROUD AND MOCKUP 4010 BLOWER AND CONFIRM FITMENT BEFORE PURCHASING OR MODIFYING ANYTHING! PLEASE POST IN THE COMMENTS IF THIS SHROUD WORKS FOR YOU AND WHAT CARD YOU HAVE INSTALLED** The shroud is designed to sit on the two tabs that are used to hold the 2.5" drive caddy and the PCIe riser card that is needed to install the network cards. So make sure proper clearance is available. ### Temperature Results: The following results were generated using a thermocouple sitting on the heat sink of a Fujitsu D2755-A11 GS3 (Intel X520-DA2) network card, at a 30.2c ambient temperature and the machine running a 100% CPU benchmark for an hour. Also installed is a baffle on the rear of the unit, so more than likely this limits the air flow. As far as I can tell, this card does not have an onboard temperature sensor, so the high temperature without the fan is more likely higher when measured on the chipset itself.  ### Bill of Materials - 5v 4010 Blower Fan - JST XH 2.54 mm pitch female 2-pin terminal - M2x4 or M2x5 mm screw depending on the model of 4010 blower fan you buy ### Tools Needed - Soldering Iron - Solder - Needle Nose Pliers (modifying the JST terminal) - Screwdriver for the M2 screws - Multimeter (if you want to verify stuff ... lol) ### Cost: - $7 USD for 500pc M2 M2.5 M3 Screw Kit - $8 USD for JST XH terminals - $11 USD for 2x WINSINN 40mm blower fan So, if you're modifying more than one machine, this gets cheaper per device. ## Install Once you've confirmed the shroud and mockup work with your setup, go ahead and install the 4010 blower fan onto the shroud using M2 screws, depending on the model of fan you purchase, you may need to have a M2x4 or M2x5. With the WINSINN fan I purchased, I had to use M2x5. Now the hard part. We'll be soldering a JST terminal to the front 5v pad  Depending on the JST XH 2.54 you have, you may need to modify the terminal in order to reach the positive and negative on the 5v pad that it will be soldered to. I purchased terminal that are used for a surface mount install, so I just bent the pins at a 90 degree angle. I'd imagine the ones you can buy that are 90 degree already, you can probably push the pins out and put them back in so instead of them point 90 outward, the point 90 to the side, 180 of each other.  You'll want to add a little solder to the 5v pad solder joints and the JST connector. Before soldering, note the orientation of the fan's plug and positive pin. The motherboard is marked which side is positive and which side is negative. Make sure to solder the connector on in the correct orientation. Once installed it's a pretty clean look  Once the pin is soldered on, go ahead and install everything into the machine, including the shroud. When the machine powers up, the fan will kick on.  <3